Question Paper Code : A1509 (AUTONOMOUS) B. Tech IV ...b) Draw the block diagram to show how basic...

Hall Ticket No: Question Paper Code : A1509

(AUTONOMOUS)

B. Tech IV Semester Supplementary Examinations, November - 2016 (Regulations: VCE-R11/R11A)

COMPUTER ARCHITECTURE AND ORGANIZATION (Common to Computer Science and Engineering, Information Technology,

Electronics and Communication Engineering & Electrical and Electronics Engineering) Date: 30 November, 2016 Time: 3 hours Max Marks: 75

Answer ONE question from each Unit

All Questions Carry Equal Marks

Unit – I

1. a) Represent the following decimal values as signed 7 bit number using sign magnitude, signed 1’s complement and signed 2’s complement formats: i. -10 ii. +43 iii. -27 iv. 51

6M

b) With a neat block diagram, discuss the basic operational concepts of computer.

9M

2. a) Discuss: i. Shift micro operations ii. Error detection codes

10M

b) Describe single bus organization of a computer system.

5M

Unit – II

3. a) Draw the flow chart for interrupt cycle and write in brief about modified fetch phase. 7M b) Write a program to evaluate X=(A+B)*(C+D), operands are in memory addresses A, B, C

and D results stored in memory at address X using 3, 2, 1, 0 address instructions.

8M

4. a) Explain any five memory reference instructions. 10M b) Draw the block diagram to show how basic computer registers are connected to the

common bus.

5M

Unit – III

5. a) With a neat diagram, explain micro programmed control unit. Differentiate between hardwired and micro programmed control.

9M

b) Perform long hand division for binary number divisor is 1101 and dividend is 100010010.

6M

6. a) Draw the block diagram of BCD adder. 5M b) With a block diagram, explain multiplication of positive numbers using array multiplier.

10M

Unit – IV

7. a) What are the different kinds of DMA transfer? 8M b) Explain RAID Technology.

7M

8. a) With a neat diagram, explain the typical ROM structure. 7M b) Consider the system that has 48-bit virtual addresses, 36-bit physical addresses, 128MB

of main memory, page size in the system 4096-byte (4kB) pages. Find system’s support to how many virtual and physical pages in the address space?

8M

Cont…2

::2::

Unit – V

9. a) What is the purpose of system bus controller in system bus structure for multiprocessors? Explain how the system can be designed to distinguish between references to local memory and references to common shared memory.

8M

b) Draw the diagram showing hypercube structure for n=3, explain in brief.

7M

10. a) What is interprocessor arbitration? Draw parallel arbitration scheme and explain in brief. 9M b) Explain the purpose of snoopy cache controller. 6M


(AUTONOMOUS)

B. Tech IV Semester Supplementary Examinations, November - 2016 (Regulations: VCE-R14)

COMPUTER ARCHITECTURE AND ORGANIZATION (Common to Computer Science and Engineering & Electronics and Communication Engineering)

Date: 30 November, 2016 Time: 3 hours Max Marks: 75



Unit – I

1. a) Represent the following decimal values as signed 7 bit number using sign magnitude, signed 1’s complement and signed 2’s complement formats: v. -10 vi. +43 vii. -27 viii. 51

6M

b) With a neat block diagram, discuss the basic operational concepts of computer.

9M

2. a) Discuss: iii. Shift micro operations iv. Error detection codes

10M

b) Describe single bus organization of a computer system.

5M

Unit – II

3. a) Draw the flow chart for interrupt cycle and write in brief about modified fetch phase. 7M b) Write a program to evaluate X=(A+B)*(C+D), operands are in memory addresses A, B, C

and D results stored in memory at address X using 3, 2, 1, 0 address instructions.

8M

4. a) Explain any five memory reference instructions. 10M b) Draw the block diagram to show how basic computer registers are connected to the

common bus.

5M

Unit – III

5. a) With a neat diagram, explain micro programmed control unit. Differentiate between hardwired and micro programmed control.

9M

b) Perform long hand division for binary number divisor is 1101 and dividend is 100010010.

6M

6. a) Draw the block diagram of BCD adder. 5M b) With a block diagram, explain multiplication of positive numbers using array multiplier.

10M

Unit – IV

7. a) What is array processor? Explain different types of processors. 7M b) With a block diagram explain DMA controller.

8M

8. a) Define hit rate and miss penalty. Calculate the total access time if miss rate is 0.12 miss penalty is 0.015ms and cache access time is 10microseconds.

7M

b) Illustrate : i. Memory management by Segmentation ii. Memory management by Paging

8M

Cont…2

::2::

Unit – V

9. a) What is the purpose of system bus controller in system bus structure for multiprocessors? Explain how the system can be designed to distinguish between references to local memory and references to common shared memory.

8M

b) Draw the diagram showing hypercube structure for n=3, explain in brief.

7M

10. a) What is interprocessor arbitration? Draw parallel arbitration scheme and explain in brief. 9M b) Explain the purpose of snoopy cache controller. 6M


(AUTONOMOUS)

B. Tech IV Semester Supplementary Examinations, December - 2016 (Regulations: VCE-R11/R11A)

OPERATING SYSTEMS (Common to Computer Science and Engineering & Information Technology)

Date: 1 December, 2016 FN Time: 3 hours Max Marks: 75



Unit – I

1. a) Explain different OS structure. 8M b) List five services provided by an operating system, and explain how each creates

convenience for users. In which cases would it be impossible for user-level programs to provide these services? Explain your answer.

7M

2. a) Explain the differences in the degree to which the following scheduling algorithms discriminate in favor of short processes: i. FCFS ii. RR iii. Multilevel feedback queues

7M

b) Write the Gantt chart using the non-preemptive shortest job first scheduling algorithm for the following data:

Process Burst time(ms) Arrival time(ms)

P1 6 0

P2 8 1

P3 7 1

P4 3 2

i. Find average waiting time ii. Find average turnaround time

8M

Unit – II

3. a) Is Peterson's algorithm satisfies the requirements to the critical section problem? Justify. 7M b) Consider the following snapshot of a system. Answer the following questions using

Banker's algorithm: i. What is the content of need matrix ii. Is the system in a safe state iii. If a request from process P1 arrives for (1, 0, 2), can the request granted immediately

Allocation Maximum Available

A B C A B C A B C

P0 0 1 0 7 5 3 3 3 2

P1 2 0 0 3 2 2

P2 3 0 2 9 0 2

P3 2 1 1 2 2 2

P4 0 0 2 4 3 3

8M

Cont…2

:: 2 ::

4. a) What is the significance of studying readers and writers problem in the OS? Explain readers and writers problem with an algorithm in brief.

7M

b) Are the Unix operating systems prone to deadlock? Explain general methods for handling deadlocks.

8M

Unit – III

5. a) Explain different file access methods. 8M b) With a neat diagram explain the steps involved in handling page fault.

7M

6. a) What is segmentation? Explain segmentation hardware with a block diagram. 8M b) What are the differences between Internal and external fragmentation? Discuss the

solution to internal and external fragmentation with an example. What is 50% rule?

7M

Unit – IV

7. a) Explain tertiary storage structure. 7M b) Discuss the services provided by the kernel with respect to I/O.

8M

8. a) Explain a kernel I/O structure in detail. 7M b) Explain any two disk scheduling algorithms with example.

8M

Unit – V

9. a) Explain protection domain organization in Multics. 8M b) What is access matrix? Explain its use with respect to protection.

7M

10. a) Explain the followings: i. Worms ii. Viruses iii. DDOS

8M

b) Discuss the security measures taken at physical, human, OS, network to protect a system. 7M

Hall Ticket No: Question Paper Code: A2011

(AUTONOMOUS) B. Tech IV Semester Supplementary Examinations, December - 2016

(Regulations: VCE- R14)

ENVIRONMENTAL SCIENCE

(Common to Computer Science and Engineering, Information Technology & Electrical and Electronics Engineering)


Answer ONE question from each Unit All Questions Carry Equal Marks

Unit – I

1. a) Discuss about renewable and non renewable energy sources. 7M b) Briefly explain the impacts on environment by the following human activities:

i. Agricultural ii. Urbanization

8M

2. a) Discuss the effects on environment due to extracting and using of mineral resources. 7M b) Discuss about effect of soil erosion and desertification on environment.

8M

Unit – II

3. a) Explain the energy flow and mineral cycling with a flow diagram. 7M b) What is an ecosystem? Explain the structure and function of an ecosystem.

8M

4. a) Discuss in brief about biodiversity and its conservation. 7M b) Explain the endangered and endemic species with examples.

8M

Unit – III

5. a) Discuss about global warming causes and effects. 8M b) Discuss about sources, causes and control methods of air pollution.

7M

6. a) Discuss about plastic waste recycle and reuse. 8M b) Discuss in detail about rain water harvesting.

7M

Unit – IV

7. a) How carbon credits can be achieved during operations? 8M b) Discuss about carbon sequestration. State the importance of pre combustion and post

combustion in carbon sequestration.

7M

8. a) Discuss in detail about different ISO 14000 standards. 8M b) Discuss in detail about polluter pay principle.

7M

Unit – V

9. a) Explain the provisions of environmental (Protection) Act 1986. 7M b) Explain briefly the Forest Conservation Act, 1980.

8M

10. a) Briefly discuss the importance of environmental protection. 7M b) With reference to EIA explain the following terms:

i. Scoping ii. Impact prediction iii. Mitigation

8M



(Regulations: VCE-R11/R11A)

THEORY OF COMPUTATION

(Computer Science and Engineering)



Unit – I

1. a) Obtain a DFA to accept the language where number of a’s divided by 5 over the alphabets a, b.

7M

b) Obtain an NFA to accept strings of a’s and b’s ending with ab or ba. From this obtain an equivalent DFA.

8M

2. a) Construct DFA for the following: i. L= ,wbab | w ɛ ,a,b- *- ii. To accept string of a’s and b’s having not more than three a’s

8M

b) Construct DFA equivalent to the following NFA: M = (,p, q, r, s-, ,0, 1-, δ, p, ,q, s-)

PS Next State

0 1

P q, s q

q r q, r

r s p

s - p

7M

Unit – II

3. a) Write the regular expression for the following languages over the alphabet a, b L = anbm: n<4, m ≥ 3- i. All the strings not ending with ‘ab’ ii. All the strings do not contain two consecutive a’s.

9M

b) Give the regular expression for the following DFA:

Fig.1

6M

4. a) Construct ε-NFA for the following regular expressions: i. (a+b)aa(a+b) ii. (a+b)*ab

9M

b) Prove that (1 + 00*1) + (1 + 00*1) (0 + 10*1)* (0 + 10*1) = 0* 1 (0 + 10*1)*.

6M

Unit – III

5. a) Check whether the string "baaba" is acceptable by the following grammar or not: |S AB BC

|A BA a

|B CC b

|C AB a

10M

b) Eliminate all the ε-productions from:

, ,S AaB aaB A B bbA

5M

Cont…2

:: 2 ::

6. a) Discuss about closure and decision properties of CFL. 9M b) Find the CFG with no useless symbols equivalent to the following grammar:

, , , |S AB CA B BC AB A a C aB b

6M

Unit – IV

7. a) Explain about DPDA and NPDA. 6M

b) Construct NPDA for the language ( ) |L , 0n m m na b c n m

9M

8. a) Convert the following CFG to PDA: SAabc AaB|a B bA|b C a

7M

b) Write and explain the algorithm to convert from the given PDA to a CFG.

8M

Unit – V

9. a) Give and explain the formal definition of a Turing Machine. 5M b) Design a Turing Machine to accept the following language :

0 1 2 | 1n n nL n

10M

10. a) Show that “Post Correspondence Problem is un-decidable”. 8M b) Write about Universal Turing machine. 7M



(Regulations: VCE-R14)

FORMAL LANGUAGES AND AUTOMATA THEORY

(Common to Computer Science and Engineering & Information Technology)



Unit – I

1. a) Obtain a DFA to accept the language where number of a’s divided by 5 over the alphabets a, b.

7M

b) Obtain an NFA to accept strings of a’s and b’s ending with ab or ba. From this obtain an equivalent DFA.

8M

2. a) Construct DFA for the following: iii. L= ,wbab | w ɛ ,a,b- *- iv. To accept string of a’s and b’s having not more than three a’s

8M

b) Construct DFA equivalent to the following NFA: M = (,p, q, r, s-, ,0, 1-, δ, p, ,q, s-)

PS Next State

0 1

P q, s q

q r q, r

r s p

s - p

7M

Unit – II

3. a) Write the regular expression for the following languages over the alphabet a, b L = anbm: n<4, m ≥ 3- iii. All the strings not ending with ‘ab’ iv. All the strings do not contain two consecutive a’s.

9M

b) Give the regular expression for the following DFA:

Fig.1

6M

4. a) Construct ε-NFA for the following regular expressions: iii. (a+b)aa(a+b) iv. (a+b)*ab

9M

b) Prove that (1 + 00*1) + (1 + 00*1) (0 + 10*1)* (0 + 10*1) = 0* 1 (0 + 10*1)*.

6M

Unit – III

5. a) Check whether the string "baaba" is acceptable by the following grammar or not: |S AB BC

|A BA a

|B CC b

|C AB a

10M

b) Eliminate all the ε-productions from:

, ,S AaB aaB A B bbA

5M

Cont…2

:: 2 ::

6. a) Discuss about closure and decision properties of CFL. 9M b) Find the CFG with no useless symbols equivalent to the following grammar:

, , , |S AB CA B BC AB A a C aB b

6M

Unit – IV

7. a) Explain about DPDA and NPDA. 6M

b) Construct NPDA for the language ( ) |L , 0n m m na b c n m

9M

8. a) Convert the following CFG to PDA: SAabc AaB|a B bA|b C a

7M

b) Write and explain the algorithm to convert from the given PDA to a CFG.

8M

Unit – V

9. a) Give and explain the formal definition of a Turing Machine. 5M b) Design a Turing Machine to accept the following language :

0 1 2 | 1n n nL n

10M

10. a) Show that “Post Correspondence Problem is un-decidable”. 8M b) Write about Universal Turing machine. 7M




WEB TECHNOLOGIES




Unit – I

1. a) With necessary attributes, discuss any four HTML tags. 8M b) Discuss the purpose of CSS. Illustrate the same with a suitable example.

7M

2. a) Write a Javascript to validate the value entered in the date-of-birth field of a form is valid or not.

10M

b) Illustrate with an example use of arrays in Javascript.

5M

Unit – II

3. a) What is the purpose of XML? Discuss its Document structure. 6M b) Write an example XML schema Document for defining complex type of XML data.

9M

4. a) List the salient features of Apache Tomcat web server. 7M b) Discuss XML namespace in detail with script demonstration.

8M

Unit – III

5. a) What is servlets? What are the phases of servlets life cycle? 9M b) Write a note on:

i. Session tracking ii. Cookie

6M

6. a) Write a HTML script and corresponding servlet to handle HTTP request. 8M b) Create a servlet that displays sever information.

7M

Unit – IV

7. a) Write the purpose of JSP Action Tags. List and discuss any five JSP action tags. 7M b) Discuss the process used for accessing the database using a JSP tag.

8M

8. a) How a Javabean is different from a Java Class? Write a simple example for JavaBean. 7M b) Make a JSP page that randomly selects a background color for each request. Just choose

at random among a small set of predefined colors.

8M

Unit – V

9. Write a short notes on the following: i. Joomla ii. Need and benefit of CMS iii. JSF techniques

15M

10. Write a note on the following: i. CGI ii. AJAX iii. ASP trends

15M




SOFTWARE ENGINEERING




Unit – I

1. a) Discuss the three important characteristics of the software. 6M b) Explain the waterfall model in detail. Discuss its limitations.

9M

2. a) How Prototyping approach helps in getting a better system? What are its limitations? 7M b) Discuss the framework activities of personal software process in detail.

8M

Unit – II

3. a) Explain the requirements engineering process. 5M b) Explain the types of behavioral models.

10M

4. a) Explain structured methods with weaknesses. 10M b) Explain the generic types of view points.

5M

Unit – III

5. a) Explain the following factors with reference to user interface design process. i. Response time ii. Help facilities iii. Error handling iv. Menu and command labeling

10M

b) Discuss the user interface design process.

5M

6. a) Explain the process of debugging. 8M b) Justify the statement 'Boundary value analysis is a test case design technique that

complements equivalence partitioning'.

7M

Unit – IV

7. a) Explain the Size oriented and function oriented metrics. 9M b) Discuss the process of risk management.

6M

8. a) Explain in details the Risk Mitigation, Monitoring and Management. 9M b) Bring out the differences between Measures, Metrics and Indicators.

6M

Unit – V

9. a) Explain the process of product measurements in detail. 10M b) Write the examples of document standard that may be developed

5M

10. a) Explain in detail the quality review and its types. 10M b) Outline the structure for a quality plan. 5M




UNIX PROGRAMING




Unit – I

1. a) With suitable examples discuss the methods used to change file permissions. 8M b) Explain the relationship between kernel and shell in the architecture of Unix Operating

System.

7M

2. a) Discuss the importance of the following regular expression character sub set: *

. [pqr] ^pqr [c1-c2] ^abc$

6M

b) Explain the following commands with suitable syntax and example: Head Tee Comm How is egrep different from grep?

9M

Unit – II

3. a) Write a shell script to perform any three string related tests on a given file. 6M b) Write the syntax and usage of the following functions:

Read() umask() lstat()

9M

4. a) Discuss the concept of redirection used by shell with respect to the three standard files. 6M b) Write the syntax and usage of the following functions:

lseek() symlink() telldir()

9M

Unit – III

5. a) Explain the functions used for dynamic memory allocation in C with relevant syntax. 6M b) Discuss the importance of the following functions with syntax:

vfork ( ) waitpid( ) system ( )

9M

6. a) Discuss the importance of the following functions in Unix Programming with relevant syntax: wait() exec() alarm()

9M

b) Explain how fcntl ( ) can used for record locking. 6M

Cont…2

:: 2 ::

Unit – IV

7. a) What are the limitations of pipes? Write a C program to let the parent and child synchronise.

10M

b) What is a Semaphore? Discuss the importance of semop() system call.

5M

8. a) Discuss the importance of the following functions with relevant syntax: msgget() msgctl()

6M

b) With relevant system calls explain how a process attaches the shared memory to its address space. Demonstrate with a suitable program.

9M

Unit – V

9. a) Explain the following function with its syntax: i. bind() ii. connect() iii. listen() iv. accept()

8M

b) Define a socket. How do you create a socket? Give an example.

7M

10. a) List and explain the different types of sockets. 5M b) Write a program to illustrate the process of creating a socket, initializing the socket

address structure and establishing a connection from a client to the server. Assume the server IP address as 10.10.2.5 and the port number= 8000. The client after establishing a connection should send “Hello” message and wait for a reply.

10M



(Regulations: VCE- R11/R11A)

DATABASE MANAGEMENT SYSTEMS




Unit – I

1. a) Explain different levels of abstraction in DBMS and data independence. 7M b) Discuss:

i. Advantages of DBMS ii. Participation constraint and its types

8M

2. a) Draw ER diagram for the following requirements: Universal Records has decided to store information about musicians who perform on its albums (as well as other company data) in a database. Each musician that records at Universal has an (Key) and name. Each instrument used in songs recorded at Universal has a unique identification number (Key), a name and a musical key. Each album recorded on the Universal label has a unique identification number (Key), a title, a copyright date and a format. Each song recorded at Universal has a Song ID (Key), a title and an author. Each musician may play several instruments, and a given instrument may be played by several musicians. Each album has a number of songs on it, but no song may appear on more than one album. Each song is performed by one or more musicians, and a musician may perform a number of songs. Each album has exactly one musician who acts as its producer. A musician may produce several albums, of course.

7M

b) Define entity, weak entity and attribute? Discuss the various types of attribute.

8M

Unit – II

3. a) Discuss with an example, the procedure to translate weak entity sets to schema diagram. 5M b) Consider the following relational schema:

Account: Account_number, account_type, balance Customer: Customer_number, Name, Aadhar_number, address. Deposits: Account_number, Customer_number, Write the relational algebra queries for the following: i. List joint accounts involving more than three customers ii. Retrieve the customers who have a single account in a bank. iii. List the customers who have balance less than the given value. iv. Find the customers whose balance is more than the average balance of the entire

customers.

10M

Cont…2

::2::

4. a) Discuss with an example the aggregate operations, which can be applied on any column

of a relation. 5M

b) Consider the following relational schema: Car: Reg_Number, engine_number, colour, model. Owner: name, Adhaar_number, address. Owns: Reg_Number, Adhaar_number, purchase date. Write the optimized SQL queries for the following: i. Write create command to create the table ‘Owns’ by considering all schema level

constraints ii. Write SQL insertion query to insert few tuples to all the relations iii. Find a person who owns highest number of cars iv. Write alter table command to add check constraint that allows purchase date must

be less than the current date to the Owns table

10M

Unit – III

5. a) Explain various update anomalies due to poor database design. 7M b) What is functional dependency? With respect to FD:

i. Mention the conditions to be satisfied by set of FDs to be Minimal ii. Write an Algorithm to compute the attribute closure of attribute set X iii. List the inference rules for FDs

8M

6. a) Discuss multivalued dependencies 4NF, 5NF. 9M b) What is the key of R. Consider the universal relation?

R(A,B,C,D,E,F,G,H,I,J) and the set of functional dependencies. F=[A,B-> C,B,D-> E,F, A,D -> G,H, A-> I , H -> J] Decompose R into 2NF and then 3NF Relations.

6M

Unit – IV

7. a) Explain transaction model with a neat state diagram. 7M b) Discuss the deadlock detection and recovery schemes.

8M

8. a) Briefly describe two phase locking protocol with an example. 8M b) Explain shadow paging recovery techniques. List the draw backs of shadow paging.

7M

Unit – V

9. a) Describe how search insert and delete operations work in ISAM indexes. 8M b) i. List the alternatives available for the data entries in an index

ii. Differentiate clustered and un-clustered index

7M

10. a) What is composite search key? Give an example. discuss the tradeoffs in choosing composite search keys

7M

b) Discuss the main characteristics of B+-trees. Describe the format of nodes in B+-trees. 8M




DATABASE MANAGEMENT SYSTEMS




Unit – I

1. a) Explain different levels of abstraction in DBMS and data independence. 7M b) Discuss:

iii. Advantages of DBMS iv. Participation constraint and its types

8M

2. a) Draw ER diagram for the following requirements: Universal Records has decided to store information about musicians who perform on its albums (as well as other company data) in a database. Each musician that records at Universal has an (Key) and name. Each instrument used in songs recorded at Universal has a unique identification number (Key), a name and a musical key. Each album recorded on the Universal label has a unique identification number (Key), a title, a copyright date and a format. Each song recorded at Universal has a Song ID (Key), a title and an author. Each musician may play several instruments, and a given instrument may be played by several musicians. Each album has a number of songs on it, but no song may appear on more than one album. Each song is performed by one or more musicians, and a musician may perform a number of songs. Each album has exactly one musician who acts as its producer. A musician may produce several albums, of course.

7M

b) Define entity, weak entity and attribute? Discuss the various types of attribute.

8M

Unit – II

3. a) Discuss with an example, the procedure to translate weak entity sets to schema diagram. 5M b) Consider the following relational schema:

Account: Account_number, account_type, balance Customer: Customer_number, Name, Aadhar_number, address. Deposits: Account_number, Customer_number, Write the relational algebra queries for the following: v. List joint accounts involving more than three customers vi. Retrieve the customers who have a single account in a bank. vii. List the customers who have balance less than the given value. viii. Find the customers whose balance is more than the average balance of the entire

customers.

10M

Cont…2

::2::

4. a) Discuss with an example the aggregate operations, which can be applied on any column

of a relation. 5M

b) Consider the following relational schema: Car: Reg_Number, engine_number, colour, model. Owner: name, Adhaar_number, address. Owns: Reg_Number, Adhaar_number, purchase date. Write the optimized SQL queries for the following: v. Write create command to create the table ‘Owns’ by considering all schema level

constraints vi. Write SQL insertion query to insert few tuples to all the relations vii. Find a person who owns highest number of cars viii. Write alter table command to add check constraint that allows purchase date must

be less than the current date to the Owns table

10M

Unit – III

5. a) Explain various update anomalies due to poor database design. 7M b) What is functional dependency? With respect to FD:

iv. Mention the conditions to be satisfied by set of FDs to be Minimal v. Write an Algorithm to compute the attribute closure of attribute set X vi. List the inference rules for FDs

8M

6. a) Discuss multivalued dependencies 4NF, 5NF. 9M b) What is the key of R. Consider the universal relation?

R(A,B,C,D,E,F,G,H,I,J) and the set of functional dependencies. F=[A,B-> C,B,D-> E,F, A,D -> G,H, A-> I , H -> J] Decompose R into 2NF and then 3NF Relations.

6M

Unit – IV

7. a) Explain transaction model with a neat state diagram. 7M b) Discuss the deadlock detection and recovery schemes.

8M

8. a) Briefly describe two phase locking protocol with an example. 8M b) Explain shadow paging recovery techniques. List the draw backs of shadow paging.

7M

Unit – V

9. a) Describe how search insert and delete operations work in ISAM indexes. 8M b) iii. List the alternatives available for the data entries in an index

iv. Differentiate clustered and un-clustered index

7M

10. a) What is composite search key? Give an example. discuss the tradeoffs in choosing composite search keys

7M

b) Discuss the main characteristics of B+-trees. Describe the format of nodes in B+-trees. 8M


(AUTONOMOUS) B. Tech IV Semester Supplementary Examinations, November - 2016


DESIGN AND ANALYSIS OF ALGORITHMS (Information Technology)

Date: 30 November, 2016 FN Time: 3 hours Max Marks: 75


Unit – I

1. a) With necessary pseudo code conventions, write the algorithm for linear search. 6M b) With an example, define and explain any three asymptotic notations.

9M

2. a) With an example and algorithm, explain binary search using divide and conquer technique

12M

b) What is Strassan’s matrix multiplication?

3M

Unit – II

3. a) Solve the following graph for its minimum spanning tree using: i. Prim’s algorithm ii. Kruskal’s algorithm

Fig.1

8M

b) Solve the following knapsack problem using greedy technique. Where m=40 and n=4 Weights [W1, W2, W3, W4] = [20, 25, 10, 15] Profits [P1, P2, P3, P4] = [20, 40, 35, 45]

7M

4. a) Write and explain the pseudo code for BFS. 6M b) Write and explain the greedy algorithm for sequencing unit time jobs with dead-lines

and profits.

9M

Unit – III

5. a) With an example, explain all pairs shortest path algorithm. 8M b) Write the algorithm for optimal binary search tree and discuss its time complexity.

7M

6. a) State and explain the procedure for solving a 0/1 knapsack problem using dynamic programming.

7M

b) Find the optimal cost tour for the given undirected connected graph shown in Fig.2.

Fig.2

8M

Cont…2

:: 2 ::

Unit - IV 7. a) Define graph coloring problem. 4M b) What is backtracking? Solve the following using sum of subsets problem. Where set

S=1,2,5,6,8 and sum d=9.

11M

8. a) Using backtracking, find the Hamiltonian circuits in the following graph using state space tree.

Fig.3

7M

b) Explain the LC branch and bound solution for the following 0/1 knapsack instance with n=4 and capacity m=15.

Object i Pi Wi

1 10 2

2 10 4

3 12 6

4 18 9

8M

Unit – V

9. a) Differentiate between NP-Complete and NP-Hard problems. 7M b) Discuss Cook’s theorem for NP-Complete and NP-Hard problems.

8M

10. a) Can we write a polynomial time complexity algorithm for every NP-class problem? Explain with justification.

7M

b) With an example, explain the following solvable NP-Complete problems: i. Decision problem ii. Optimization problem

8M


(AUTONOMOUS)


DATA COMMUNICATION SYSTEMS (Information Technology)




Unit – I

1. a) With necessary diagram, explain layered network architecture. 9M b) Explain the use of the following:

i. IETF ii. IRTF iii. EIA

6M

2. a) With necessary examples, define amplitude, frequency and phase of a sine wave. 9M b) List any two key functions of the following OSI layers :

i. Transport layer ii. Presentation layer iii. Application layer

6M

Unit – II

3. a) With a diagram explain coaxial transmission line. 6M b) Explain the following :

i. Parallel computer transmission lines ii. Open-wire transmission lines iii. Twisted-pair transmission lines

9M

4. a) With a diagram explain two-wire parallel transmission line. 7M b) With necessary formulas describe the terms velocity factor and dielectric constant.

8M

Unit – III

5. What is pulse modulation? Explain briefly four different types of pulse modulation techniques.

15M

6. a) What is Wavelength-Division Multiplexing? List three merits and demerits of the same 10M b) Differentiate between linear and non linear PCM codes.

5M

Unit – IV

7. a) What is Universal Product Code? Explain briefly the format of POSTNET code. 12M b) The data pattern 1010001101 is augmented with a 4-bit CRC field based on the divisor

polynomial 10011. What are the contents of this field?

3M

8. a) Explain briefly binary synchronous communications polling sequences. 10M b) What is Forward error correction? Illustrate with an example.

5M

Unit – V

9. a) Explain briefly any three operational modes used by computers to communicate with data communications modems using the AT command set.

9M

b) Explain briefly two major categories of signaling with respect to a typical telephone.

6M

10. a) Discuss the functionality of channel service unit. 6M b) Explain briefly paging systems. Compare and contrast traditional paging systems with

the modern paging systems. 9M

Hall Ticket No: Question Paper Code:

A1410



ELECROMAGNETIC THEORY AND TRANSMISSION LINES

(Electronics and Communication Engineering)



Unit – I

1. a) Define electric field intensity. A uniform sheet of charge with 1/3 nC/m2 is located at Z=5m and a uniform line charge density of 2.78nC/m at Z= -3 and y=3m, find E at (x, -1,0)m.

8M

b) State and explain Gauss law. Prove the divergence theorem for the region r<a

(in spherical system) having the flux density 5

3r

rD a

7M

2. a) Analyze and prove that the work done is same in moving a charge of 15 C in an

electro static field with 28 4 2 /y zxE xy a x a a V m

from point B(1, 7, 4) to (2, 17,

5), if the path selected is: i. Straight lime from B to A ii. The path selected is y=3x2+z. and z =x+3

8M

b) A point charge of 6nC is located at origin in free space. Find the potential at point P located at (0.2, 0.4, 0.4) if: i. v=0 at infinite ii. v=0 at (0, 1, 0) iii. v=30v at (-0.1, 1,-1)

7M

Unit – II

3. a) What are the limitation of scalar magnetic potential? Explain the concept of vector magnetic potential. Arrive an expression for vector magnetic potential by composing with electric potential.

8M

b) A current filament carrying 15A in the a direction lies along the entire z-axis find the

H

in rectangular co-ordinates at:

i. 20, 0,4AP

ii. 2, 4,4BP

7M

4. a) A very long solenoid with 2cm x 2cm cross section has an iron core (μr = 1000) and 4000 turns per meter. It carries a current of 500mA. Find Self inductance per meter and Energy stored per meter in its field.

7M

b) A thin ring of radius 5cm is placed on z=1cm so that its center is at(0,0,1cm). If the ring

carries 50mA along aφ. Find H at (0,0,-1cm) and at (0,0,10cm).

8M

Unit – III

5. a) State and explain Maxwell’s equations in time varying fields in both differential and integral forms.

8M

b) State and explain Faraday’s law.

7M

Cont…2

:: 2 ::

6. a) Define displacement current density. A parallel plate capacitor with plate area 5m2 and

plate separation of 3mm has a voltage V = 50 sin(1000t) volt applied to its plates. Calculate displacement current density assuming ε = 2 εo.

7M

b) A homogenous dielectric(εr = 2.5) fills region-1 (x<0) while region-2 (x>0) is free space: i. If D = 12 ax -10 ay +4az nc/m2 find D2 and θ2 ii. If E2 = 12 v/m and θ2 = 60, find E1 and θ1

8M

Unit-IV

7. a) State and prove Poynting theorem. 7M

b) In a lossless dielectric η = 60π, μr = 1 and H = -0.1cos(wt-z) xa +0.5 sin(wt-z) ya A/m.

Calculate εr, w and E.

8M

8. a) Derive the expression for electromagnetic wave propagating through lossless dielectric medium.

8M

b) A plane wave is traveling in +y direction in a lossy medium (εr = 4, μr = 1, ς = 10-2 s/m) has E = 30cos(109 πt + π/4) az v/m at y = 0, find: i. E at y = 1m, t = 2nsec ii. H at y = 2m, t = 2nsec

7M

Unit – V

9. a) Explain the mismatched losses in transmission lines. 7M b) A50 lossless lime connects a matched signal of 100KHz to a load of 100 . The load

power is 100mn. Calculate: i. Voltage reflection co-efficient of the load ii. VSWR of the load iii. Position of the first Vmin and Vmax iv. Impedance at Vmin and Vmax abd vakyes if Vmax and Vmin

8M

10. a) Discuss the single stub matching in a lossless lines. 6M b) A transmission line of 100m length and a characteristic impedance of 100 is

terminated by a load ZL=100-j200 . Using the Smith chart, determine the line impedance and admittance at 25m from the load end at a frequency of 10MHz.

9M




ELECROMAGNETIC THEORY AND TRANSMISSION LINES




Unit – I

1. a) Define electric field intensity. A uniform sheet of charge with 1/3 nC/m2 is located at Z=5m and a uniform line charge density of 2.78nC/m at Z= -3 and y=3m, find E at (x, -1,0)m.

8M

b) State and explain Gauss law. Prove the divergence theorem for the region r<a

(in spherical system) having the flux density 5

3r

rD a

7M

2. a) Analyze and prove that the work done is same in moving a charge of 15 C in an electro

static field with 28 4 2 /y zxE xy a x a a V m

from point B(1, 7, 4) to (2, 17, 5), if the

path selected is: iii. Straight lime from B to A iv. The path selected is y=3x2+z. and z =x+3

8M

b) A point charge of 6nC is located at origin in free space. Find the potential at point P located at (0.2, 0.4, 0.4) if: iv. v=0 at infinite v. v=0 at (0, 1, 0) vi. v=30v at (-0.1, 1,-1)

7M

Unit – II

3. a) What are the limitation of scalar magnetic potential? Explain the concept of vector magnetic potential. Arrive an expression for vector magnetic potential by composing with electric potential.

8M

b) A current filament carrying 15A in the a direction lies along the entire z-axis find the H

in rectangular co-ordinates at:

i. 20, 0,4AP

ii. 2, 4,4BP

7M

4. a) A very long solenoid with 2cm x 2cm cross section has an iron core (μr = 1000) and 4000 turns per meter. It carries a current of 500mA. Find Self inductance per meter and Energy stored per meter in its field.

7M

b) A thin ring of radius 5cm is placed on z=1cm so that its center is at(0,0,1cm). If the ring

carries 50mA along aφ. Find H at (0,0,-1cm) and at (0,0,10cm).

8M

Unit – III

5. a) State and explain Maxwell’s equations in time varying fields in both differential and integral forms.

8M

b) State and explain Faraday’s law.

7M

Cont…2

:: 2 ::

6. a) Define displacement current density. A parallel plate capacitor with plate area 5m2 and

plate separation of 3mm has a voltage V = 50 sin(1000t) volt applied to its plates. Calculate displacement current density assuming ε = 2 εo.

7M

b) A homogenous dielectric(εr = 2.5) fills region-1 (x<0) while region-2 (x>0) is free space: iii. If D = 12 ax -10 ay +4az nc/m2 find D2 and θ2 iv. If E2 = 12 v/m and θ2 = 60, find E1 and θ1

8M

Unit-IV

7. a) State and prove Poynting theorem. 7M

b) In a lossless dielectric η = 60π, μr = 1 and H = -0.1cos(wt-z) xa +0.5 sin(wt-z) ya A/m.

Calculate εr, w and E.

8M

8. a) Derive the expression for electromagnetic wave propagating through lossless dielectric medium.

8M

b) A plane wave is traveling in +y direction in a lossy medium (εr = 4, μr = 1, ς = 10-2 s/m) has E = 30cos(109 πt + π/4) az v/m at y = 0, find: iii. E at y = 1m, t = 2nsec iv. H at y = 2m, t = 2nsec

7M

Unit – V

9. a) Explain the mismatched losses in transmission lines. 7M b) A50 lossless lime connects a matched signal of 100KHz to a load of 100 . The load

power is 100mn. Calculate: v. Voltage reflection co-efficient of the load vi. VSWR of the load vii. Position of the first Vmin and Vmax viii. Impedance at Vmin and Vmax abd vakyes if Vmax and Vmin

8M

10. a) Discuss the single stub matching in a lossless lines. 6M b) A transmission line of 100m length and a characteristic impedance of 100 is

terminated by a load ZL=100-j200 . Using the Smith chart, determine the line impedance and admittance at 25m from the load end at a frequency of 10MHz.

9M




CONTROL SYSTEMS

(Common to Electronics and Communication Engineering & Electrical and Electronics Engineering)



Unit – I

1. a) Explain how control systems are classified. 5M

b) Obtain the transfer function

1X s

F s for the system shown in Fig.1:

Fig.1

Given M=B1=K1=K0=1.

10M

2. a) For the electric network shown in Fig.3 draw block diagram and hence obtain the transfer functions V0(s)/Vin(s):

Fig.3

8M

b) Determine the transfer function c(s)/R(s) using Mason’s gain formula for the system shown in Fig.4:

Fig.4

7M

Unit – II

3.

a) A system is given by differential equation xydt

dy

dt

yd884

2

2

, where y = output,

x=input. Determine all time domain specifications for unit step input.

7M

b) Use Routh-Hurwitz criterion and determine: i. Number of roots in left half of S-plane ii. Number of roots in right half S-plane iii. Number of roots on imaginary axis. Characteristics equation is s4+2s2+1=0

8M

Cont…2

:: 2 ::

4. a) Find error constants Kp, Kv and Ka for a unity feedback system represented by OLTF

G(s)=)5)(2(

1002 sss

. Determine the steady state error value when the input is

r(t)=1+t+2t2. What is the type and order of the system?

6M

b) Draw the approximate Root locus diagram for a closed loop system whose loop transfer function is given by:

G(s) H(s) = )10)(5( ssS

K . Comment on stability.

9M

Unit – III

5. a) Discuss the advantages and disadvantages of frequency domain analysis.

5M

b) Construct bode magnitude and phase plots for GH(s) =)101.0()1(

)11.0(1002

ssS

s Comment on

the closed loop stability of the system.

10M

6. a) Determine the transfer function for given magnitude plot.

Fig.7

5M

b) A negative feedback control system is characterized by open loop transfer function.

G(s) H(s) =)1(

5

ss. Investigate closed loop stability of the system using Nyquist stability

criteria.

10M

Unit – IV

7. a) Why compensation is necessary in feedback control system? Draw the lag compensator network and derive its transfer function. Also draw Pole-zero plot.

7M

b) Explain PI, PD, PID controllers with respect to system performance.

8M

8. a) Draw the lead compensator network. List at least two limitations of the same. 7M b) Derive the transfer function V0(s)/Vin(s) for an lead compensator network.

8M

Unit – V

9. a) State properties of state transition matrix. 7M

b) State equation of a control system is given by, 1 1

2 2

0 1

2 3

x x

x x

. Obtain the state

transition matrix.

8M

10. a) Explain controllability and observability. 5M b) Determine the state controllability and observability of the system described by:

3 1 1 0 1

1 0 1 0 0

0 0 1 2 1

x x u

, y = .011

100x

10M




PRINCIPLES OF ELECTRICAL ENGINEERING




Unit – I

1. a) Define and explain dynamically induced EMF and statically induced EMF. 8M b) Two coils, A of 12,500 turns and B of 16,000 turns lie in parallel plane so that 60% of flux

produced in coil A link coil B. It is found that a current of 5A in coil A produces a flux of 0.6mWb while the same current in coil B produces 0.8mWb. Determine: i. Mutual inductance ii. Coupling coefficient

7M

2. a) Compare electrical circuits with magnetic circuits. 7M b) Two air – cored coils are disposed relatively to each other so that 60 percent of the flux in

one coil links all the turns of the other coil. Each coil has a mean diameter of 2 cm and a length of 50cm. If there are 2000 turns of wire on one coil, calculate the number of turns required on the other coil to give a mutual inductance of 20mH.

8M

Unit – II

3. a) Derive the expression for the transient current of D. C. excited series RC series circuit using differential equation method.

7M

b) In the series circuit shown in Fig.1, the switch is closed on position 1 at t=0 thereby applying 100volt source to RL branch and at t=500micro seconds, the switch is moved to position 2. Obtain the equations for the current in both intervals:

Fig.1

8M

4. a) Derive the expression for the transient current equation of A.C. excited series RL circuit with v=Vm sin(wt + Φ),using differential equation method.

9M

b) A series RLC circuit with R=50ohm and L=0.1Henry and C=50 microfarad has a constant voltage V=100 volt applied at t=0. Find the transient current assuming zero initial charge on the capacitor.

6M

Unit – III

5. a) Derive an expression for the emf generated in the D.C. generator. 6M b) A D.C. shunt generator delivers 195 amps at a terminal voltage of 250 volts. The

resistance of armature and shunt field winding is 0.02ohm and 50ohm respectively. The iron and friction losses each 950watt. Find: i. Emf generated ii. Copper loss iii. BHP of the prime mover which is input to the generator iv. Efficiency of generator

9M

Cont…2

::2::

6. a) Explain the types of D.C. motors with neat diagrams with voltage and current equations. 7M b) With neat diagram, explain Swinburne’s test in D.C. motors.

8M

Unit – IV

7. a) Explain various losses occurring in a single phase transformer. How these losses are minimized?

8M

b) Open-circuit and short – circuit tests on a single phase transformer gave the following results respectively:

i. =200 V, =0.7 A, =20 W- Test from primary side

ii. =10 V , =10 A, Ws=40 W- Test from primary side Determine the equivalent circuit referred to primary side.

7M

8. a) Derive the Emf equation of a transformer. 5M b) A 600KVA single phase transformer has an efficiency of 92% both at full load and half

load at unity power factor. Determine its efficiency at 75% of full load at 0.9 power factor lag.

10M

Unit – V

9. a) Why a starter is necessary for a 3- phase induction motor? Explain with a neat sketch about star-delta starter used for 3- phase induction motor.

9M

b) Write in detail about the operation of capacitor-start and run single phase induction motor.

6M

10. a) Explain the slip-torque characteristics of a 3 - phase induction motor. 8M b) Explain in detail about the operation of stepper motor. 7M




ELECTRONIC CIRCUIT ANALYSIS




Unit – I

1. a) Compare CB, CE and CC transistor amplifier and with respect to: i. Zi ii. AV iii. Az iv. Z0 v. Phase change

6M

b) Compute Ai, AV, Zi, and Z0 for the CE amplifier with potential divider bias. The component

values and h parameters of transistor are given by RS=1.5K, R1=50K, R2=5K, RC=1K,

RL=2.5K, hie=2K, hfe=100. Use simplified hybrid model.

9M

2. a) Draw the common gate configuration using JFET and derive an expression for Zi and Zo. 9M b) With a small signal equivalent model, determine the gain for a common source FET

amplifier.

6M

Unit – II

3. a) Draw a feedback amplifier in block diagram, identify each block and state its function. 9M b) In a Hartley Oscillator L1=20 H, L2=2mH and capacitance C is variable. Find the range of

C if the frequency is varied from 1 MHz to 2.5 MHz, neglect mutual inductance.

6M

4. a) Derive expression for Rif and Rof in a current series feedback amplifier. 8M b) List the advantage of crystal oscillator. A crystal has L=2H, C=0.01 F and R=2KΩ. Its

mounting capacitance is 2pf, calculate its series and parallel resonant frequency.

7M

UNIT – III

5. a) Draw the Darlington amplifier circuit and derive expressions for Ri and R0. 8M b) An amplifier system consists of 3 cascaded stages which have identical half power

frequencies. They are 10 Hz and 25 KHz. Determine the half power frequencies of the system.

7M

6. a) Draw the high frequency equivalent circuit of emitter follower. 5M b) Define fβ and fT for CE short circuit, and also give their relationship. If Ce=1pF,Cc=0.2pF,

r'be=1k Ω and gm=50mA/V, find fβ and fT.

10M

UNIT – IV

7. a) Derive an expression for the output power of an idealized class B push pull power amplifier.

8M

b) Draw the diagram of a transformer coupled class A power amplifier and explain the need for impedence matching.

7M

Cont…2

::2::

8. a) Using two complementary silicon transistors draw a simple class B push - pull amplifier

circuit without transformer, explain the origin of cross over distortion and a method to minimize the distortion.

7M

b) Draw the circuit of series fed class A large signal amplifier, explain its output characteristics and hence derive an expression for power.

8M

UNIT – V

9. a) Draw and explain the working of single tuned capacitive coupled amplifier and hence derive an expression for its voltage gain and bandwidth.

9M

b) Explain the following aspects in context to tuned amplifiers: i. Frequency response ii. Q-factor

6M

10. a) Explain the working of double tuned amplifier with a neat diagram and its frequency response.

8M

b) A single tuned RF amplifier uses a transistor with an output resistance of 50kΩ, output capacitance of 15pF and input resistance of next stage is 20kΩ. The tuned circuit consists of 47pF capacitance in parallel with series combination of 1µH inductance and 2Ω resistance. Calculate: i. Resonant frequency ii. Quality factor iii. Bandwidth

7M




ANALOG COMMUNICATIONS




Unit – I

1. a) Define modulation. Explain the need and importance of modulation. 7M b) Explain the switching modulator for generating AM wave with a neat block diagram and

necessary mathematical expressions.

8M

2. a) With neat block diagram explain the method of demodulating the DSBSC modulated wave using COSTAS receiver.

8M

b) When the modulation percentage is 75, an AM transmitter produces 10KW. How much of this is carrier power? What would be the percentage power saving if the carrier and one of the side bands were suppressed before transmission took place?

7M

Unit – II

3. a) Define SSBSC modulation. Describe the SSBSC modulation with frequency spectrum. Also discuss the advantages, applications and disadvantages of it.

8M

b) Explain the filter method of SSB demodulation with the help of a block diagram and prove this mathematically.

7M

4. a) i. Compare various Amplitude modulation schemes ii. Explain with neat block diagram phase discrimination method for the generation of

SSB waves

8M

b) Evaluate the condition for distortion less demodulation of VSB signal, initially generated by passing a DSB signal through a VSB filter, using synchronous detection.

7M

Unit – III

5. a) Explain the direct method of FM generation with the help of a circuit diagram and prove this mathematically.

8M

b) A carrier is frequency modulated by a sinusoidal modulating signal of frequency 2 KHz, resulting in a frequency deviation of 5KHz. What is the bandwidth occupied by the modulated wave form? The amplitude of the modulating sinusoid is increased by a factor of 3 and its frequency lowered to 1 KHz. What is the new band width?

7M

6. a) With circuit diagram and necessary mathematical expressions explain the operation of foster seeley discriminator technique for demodulation of FM wave.

7M

b) A carrier wave of 100 MHz is frequency modulated by a 100KHz sine wave of amplitude 20V, the sensitivity of modulator is 25KHz/volt. i. Determine the frequency deviation and bandwidth of the modulated signal using

Carson’s rule ii. if modulating voltage is doubled find the new bandwidth

8M

Cont…2

::2::

Unit – IV

7. a) Define the following with related equations: i. Noise equivalent Bandwidth ii. Narrow band noise iii. Ideal band pass filtered noise

8M

b) With neat block diagram and waveform, explain the operation of PWM signal.

7M

8. a) With neat circuit diagram and waveform explain the generation of PPM signals. 7M b) An AM receiver operating with a sinusoidal modulating signal has the following

specifications: µ=0.8 [SNR]o=30 dB. What is the corresponding carrier to noise ratio?

8M

Unit – V

9. a) With neat circuit diagram explain the operation of amplitude limiter. 8M b) With neat circuit diagram explain the operation of AGC.

7M

10. a) Explain the following terms associated with Radio receivers. i. Sensitivity ii. Selectivity

8M

b) With neat block diagram explain the AM tuned radio frequency receiver. 7M




PULSE AND DIGITAL CIRCUITS




Unit – I

1. a) Draw the low pass circuit. Derive for ramp input response of this circuit and show the input-output characteristics.

8M

b) A square wave of peak to peak amplitude 1V extends 0.5V with respect to ground. The duration of the positive section is 0.1 sec and of the negative section 0.2 sec. If the waveform is impressed upon an RC differentiating circuit whose time constant is 0.2sec? i. What are the steady state maximum and minimum values of the output waveform ii. Prove that the area under positive section equals that under the negative section of the output waveform. What is the physical significance of this result?

7M

2. a) A symmetrical square wave of peak to peak amplitude V and frequency f is applied to a

high pass circuit. Show that the percentage tilt is given by P = 1/2

1/2

(1 )200%

(1 )

fRC

fRC

e

e

. If

the tilt is small, show that its reduces to P = 200%2

T

RC .

9M

b) In a compensating attenuator prove that R1C1=R2C2.

6M

Unit – II 3. a) Explain the working of a +ve series and a –ve series diode clipper with sinusoidal input

voltage by assuming the ideal diode. Draw the transfer characteristic. Next assume a reference voltage of +VR volts. Draw the transfer characteristic.

8M

b) Draw the transfer characteristics and output voltage waveform for the two level clipper shown in Fig.1. Assume ideal diodes. The input is a sinusoidal signal of 40volts peak value.

Fig.1

7M

4. a) What is a clamping circuit? With a neat circuit diagram and waveform explain the working of +ve and a –ve clamper assuming square wave input.

7M

b) With the help of a two level clipper, explain the working of a slicer. Draw the transfer characteristics and output voltage.

8M

Unit – III

5. a) What are the advantages and disadvantages of symmetrical and unsymmetrical triggering?

9M

b) What is Schmitt trigger circuit? List the applications of Schmitt trigger circuit.

6M

Cont…2

:: 2 ::

6. a) Explain the working of collector coupled monostable multivibrator.

8M

b) In an astable multivibrator circuit shown in Fig.2. R1=R2=5KΩ, R3=R4=0.4 KΩ and C1=C2

=0.02F. Determine: i. The time period and frequency of circuit oscillations ii. Minimum value of transistor β

Fig.2

7M

Unit – IV 7. a) Draw the circuit of a transistorized bootstrap generator and explain its working. 7M b) Describe synchronization. With relevant waveform explain the required conditions to

achieve synchronization. 8M

8. a) With a neat circuit diagram, explain the working of a constant current sweep circuit with necessary equations.

8M

b) Explain with an example the methods used for linearity improvements.

7M

Unit – V 9. a) With the help of a block diagram, explain the principle of operation of a sampling gate. 7M b) Define the following terms:

i. Power dissipation ii. Propagation delay iii. Noise margin. Compare ECL and TTL with respect to the above.

8M

10. a) Draw the circuit of a six diode sampling gate, explain in brief. 7M b) Explain the operation of a CMOS inverter. List out its important features. 8M




PULSE AND DIGITAL CIRCUITS




Unit – I

1. a) Draw a ringing circuit and explain in brief its operating principle. 8M b) Prove that for the same input, the output from two differentiating circuits will be the

same if RC=L/R1. Assume that the initial conditions are those of rest (no voltage in C and no current in L).

7M

2. a) A symmetrical square wave of peak to peak amplitude V and frequency f is applied to a

high pass circuit. Show that the percentage tilt is given by P = 1/2

1/2

(1 )200%

(1 )

fRC

fRC

e

e

. If

the tilt is small, show that its reduces to P = 200%2

T

RC .

9M

b) In a compensating attenuator prove that R1C1=R2C2.

6M

Unit – II 3. a) Explain the working of a +ve series and a –ve series diode clipper with sinusoidal input

voltage by assuming the ideal diode. Draw the transfer characteristic. Next assume a reference voltage of +VR volts. Draw the transfer characteristic.

8M

b) Draw the transfer characteristics and output voltage waveform for the two level clipper shown in Fig.1. Assume ideal diodes. The input is a sinusoidal signal of 40volts peak value.

Fig.1

7M

4. a) What is a clamping circuit? With a neat circuit diagram and waveform explain the working of +ve and a –ve clamper assuming square wave input.

7M

b) With the help of a two level clipper, explain the working of a slicer. Draw the transfer characteristics and output voltage.

8M

Unit – III

5. a) What are the advantages and disadvantages of symmetrical and unsymmetrical triggering?

9M

b) What is Schmitt trigger circuit? List the applications of Schmitt trigger circuit.

6M

Cont…2

:: 2 ::

6. a) Explain the working of collector coupled monostable multivibrator.

8M

b) In an astable multivibrator circuit shown in Fig.2. R1=R2=5KΩ, R3=R4=0.4 KΩ and C1=C2

=0.02F. Determine: iii. The time period and frequency of circuit oscillations iv. Minimum value of transistor β

Fig.2

7M

Unit – IV 7. a) Explain the basic principles of Miller and bootstrap time base generators. 8M b) A 20V sweep in 500µsec is desired using transistorized bootstrap sweep circuit:

Find a reasonable value for Rb where Rb is the collector base resistor of the input transistor. i. Calculate C ii. Calculate the retrace time Tror C to discharge completely at the end of gating

waveform Given that: VCC=20V, R=5KΩ, hfe=50, Tg=700µsec.

7M

8. a) With a neat circuit diagram, explain the working of a constant current sweep circuit with necessary equations.

8M

b) Explain with an example the methods used for linearity improvements.

7M

Unit – V 9. a) With the help of a block diagram, explain the principle of operation of a sampling gate. 7M b) Define the following terms:

iv. Power dissipation v. Propagation delay vi. Noise margin. Compare ECL and TTL with respect to the above.

8M

10. a) Draw the circuit of a six diode sampling gate, explain in brief. 7M b) Explain the operation of a CMOS inverter. List out its important features. 8M




MANEGERIAL ECONOMICS AND FINANCIAL ANALYSIS

(Common to Electronics and Communication Engineering)



Unit – I

1. a) Distinguish between demand for durable and non-durable goods. 5M b) Explain advertisement elasticity of sales along with its determinants.

10M

2. a) Brief on judgmental approach of demand forecasting. 5M b) Explain income-elasticity of demand. Write the expression for the same.

10M

Unit – II

3. a) What is meant by internal and external economies of scale? 5M b Define and explain isoquants. What are the properties of isoquants?

10M

4. A firm has a fixed cost of Rs.1,00,000; selling price per unit is Rs.5 and variable cost per unit is Rs.1. Maximum capacity output is 2,00,000 units per year. Calculate Break even output and margin of safety.

15M

Unit – III

5. a) Explain the characteristics of perfect competition. 6M b) Write a note on price and output decisions in the short run under monopolistic.

Illustrate with graphs.

9M

6. What do you mean by Monopoly? Explain its features.

15M

Unit – IV

7. a) Distinguish between a partnership firm and a company. 6M b) Explain the factors which influences in estimating working capital.

9M

8. a) Explain the process of capital budgeting. 9M b) Calculate the net present value and payback period for the following cash flows.

Years 0 1 2 3 4

Cash flows (Rs.) (23,00,000) 6,00,000 8,00,000 9,00,000 7,00,000

Cost of capital is 14 per cent.

6M

Cont…2

:: 2 ::

Unit – V

9. Journalize the following transactions in the books of Raj 2012: April 1 – Raj commenced business with a cash of Rs.40,000 “3 – Cash purchases Rs.20,000 “5 – Paid salaries Rs.10,000 “13 – Sold goods to Ravi Rs.35,000 “15 – Sold furniture Rs.25,000 “20 – Commission received Rs.1,000 “22 – Discount allowed Rs.2,000 “28 – Bought goods from Rahul Rs.50,000 “29 – Sold goods for cash Rs.15,000

15M

10. a) At the close of the year, a company has an inventory of Rs.1,50,000 and cost of goods sold Rs.9,75,000. If the company’s turnover ratio is 5, determine the opening balance of inventory.

6M

b) The balance sheet of a company contained Total Current Assets of Rs. 6,50,000, Inventory of Rs. 2,50,000 and Debtors of 3,00,000. The Current Ratio of the firm was 2.5 and Cash Ratio was 0.25. Calculate Current Liabilities, Quick Ratio and Cash Balance.

9M




MANEGERIAL ECONOMICS AND FINANCIAL ANALYSIS

(Common to Electronics and Communication Engineering & Mechanical Engineering)



Unit – I

1. a) Distinguish between demand for durable and non-durable goods. 5M b) Explain advertisement elasticity of sales along with its determinants.

10M

2. a) Brief on judgmental approach of demand forecasting. 5M b) Explain income-elasticity of demand. Write the expression for the same.

10M

Unit – II

3. a) What is meant by internal and external economies of scale? 5M b Define and explain isoquants. What are the properties of isoquants?

10M

4. A firm has a fixed cost of Rs.1,00,000; selling price per unit is Rs.5 and variable cost per unit is Rs.1. Maximum capacity output is 2,00,000 units per year. Calculate Break even output and margin of safety.

15M

Unit – III

5. a) Explain the characteristics of perfect competition. 6M b) Write a note on price and output decisions in the short run under monopolistic.

Illustrate with graphs.

9M

6. What do you mean by Monopoly? Explain its features.

15M

Unit – IV

7. a) Distinguish between a partnership firm and a company. 6M b) Explain the factors which influences in estimating working capital.

9M

8. a) Explain the process of capital budgeting. 9M b) Calculate the net present value and payback period for the following cash flows.

Years 0 1 2 3 4

Cash flows (Rs.) (23,00,000) 6,00,000 8,00,000 9,00,000 7,00,000

Cost of capital is 14 per cent.

6M

Cont…2

:: 2 ::

Unit – V

9. Journalize the following transactions in the books of Raj 2012: April 1 – Raj commenced business with a cash of Rs.40,000 “3 – Cash purchases Rs.20,000 “5 – Paid salaries Rs.10,000 “13 – Sold goods to Ravi Rs.35,000 “15 – Sold furniture Rs.25,000 “20 – Commission received Rs.1,000 “22 – Discount allowed Rs.2,000 “28 – Bought goods from Rahul Rs.50,000 “29 – Sold goods for cash Rs.15,000

15M

10. a) At the close of the year, a company has an inventory of Rs.1,50,000 and cost of goods sold Rs.9,75,000. If the company’s turnover ratio is 5, determine the opening balance of inventory.

6M

b) The balance sheet of a company contained Total Current Assets of Rs. 6,50,000, Inventory of Rs. 2,50,000 and Debtors of 3,00,000. The Current Ratio of the firm was 2.5 and Cash Ratio was 0.25. Calculate Current Liabilities, Quick Ratio and Cash Balance.

9M


(AUTONOMOUS) B. Tech IV Semester Supplementary Examinations, November - 2016


SIGNALS AND SYSTEMS (Electrical and Electronics Engineering)

Date: 30 November, 2016 FN Time: 3 hours Max Marks: 75


Unit – I

1. a) Distinguish between: i. Continuous time and discrete time signals ii. Even and odd signals iii. Periodic and non-periodic signals iv. Energy and power signals

8M

b) Determine if the following signals are periodic; if periodic, give the period: i. x*n+ = 4cos(πn-2) ii. x(t) = 3cos(4t) + sin(πt)

7 M

2. a) Analyze and sketch the following the signal operation shown in Fig.1: i. x(t) *y(t-1) ii. x(t-1) *y(-t)

Fig.1

8M

b) Find the exponential Fourier series representation of the following: i. f(t)=cosw0t ii. f(t)=sinw0t

7M

Unit – II

3. a) State and prove the following properties of Fourier transform: i. Linearity ii. Time shifting property

7M

b) Obtain the Fourier transform representation for the periodic signal x(t)=sinw0t and draw the spectrum.

8M

4. a) Find the Fourier transform of x(t)=e-at; a>0. Draw its spectrum. 7M

b) Determine the time domain signal corresponding to the spectrum shown in Fig.2:

Fig.2

8M

Cont…2

::2::

Unit – III

5. a) Derive the condition for distortion-less transmission of a signal through a linear time invariant system.

7M

b) Find the convolution of: i. x1(t)=u(t+1) ii. x2(t)=u(t-2)

8M

6.

a) From the system represented by 0

n

k n

y n T x n x k

. Evaluate whether the

system is stable, Causal, Linear, Time-invariant and Memoryless.

5M

b) Find the PSD of a periodic function f(t) with period ‘T’.

10M

Unit – IV

7. a) Determine the Laplace transform and the associated region of convergence and pole zero plot for each of the following function of time: i. x(t)=e2tu(t)+ e-3tu(t) ii. x(t)=te-2t

7M

b) Consider two right sided signals x(t) and y(t) related through the differential equations

2 and 2

dx t dy ty t t x t

dt dt

Determine Y(s) and X(s) along with ROC.

8M

8. a) Let g(t)=x(t)+αx(-t) where x(t)=βe-tu(t) and the Laplace transform of g(t)is:

21 Re 1

1

sG s s

s

Determine α and β values.

8M

b) Determine the time domain signal for the given Laplace transform.

2

1Res 1

1 9

sX s

s

7M

Unit – V

9. a) State and prove the following properties of Z-transform. i. Time reversal ii. Differentiation in Z-domain

8M

b) Find the Z-transform for the following sequence: i. x(n)= -anu(-n-1) ii. )1()()( nununx nn

7M

10. a) Define Nyquist rate. Explain sampling of continuous time signals 8M b) Using partial fraction expansion method obtain the time domain signal corresponding

to the Z-transform given below

1

1 1

114

1 1 21 1

2 4

z

X z z

z z

7M




ELECTROMAGNETIC FIELDS

(Electrical and Electronics Engineering)



Unit – I

1. a) Derive an expression for electric field intensity of an infinite line charge. 8M b) Point charges of 1mc and -2mc are located at (3, 2, -1) and (-1, -1, 4)m respectively.

Calculate the electric force on a 10nc charge located at (0, 3, 1) and electric field intensity at that point.

7M

2. a) State and explain Gauss law also state clearly the advantage of Gauss’s law over coulomb’s law.

8M

b) Given th potential V = 10/r2 sinθ cosφ: i. Find the electric flux density at (2, π/2, 0) ii. Calculate the work done in moving a 10μc charge from point A(1, 30o, 120o) to B(4,

90o, 60o)

7M

Unit – II

3. a) State and explain i. Ampere’s circuital law ii. Biot-Savart’s law in vector form

6M

b) Derive the expression for H at a point due to an infinite length conductor carrying current.

9M

4. a) Using Ampere’s circuital law, obtain the magnetic field intensity due to an infinitely long straight filament carrying a direct current I.

8M

b) Determine the current density J

associated with the magnetic field defined by:

i. 3 7 2 /x y zH a a xa A m

ii. 2 3 cos /rH ra a a A m

7M

Unit – III

5. a) Derive the Neuman’s formula for mutual inductance. A solenoid has 400 turns with a length of 2m. It has a circular cross-section of 0.1m2. Find its inductance.

7M

b) State and prove the Electric Boundary conditions for an interface between two different dielectric media.

8M

6. a) Derive Poisson’s and Laplace’s equation. Also find the capacitance of a parallel plate capacitor using Laplace’s equation. Assume V=0 at x=0 and V=V0 at x=d.

7M

b) Using Laplace’s equation show that the capacitance of the concentric spheres is

4

1 1

E

a b

where V=0 at r=b; V=V0 at r=a; b>a

8M

Cont…2

:: 2 ::

Unit – IV

7. a) Find the total force and torque on a rectangular current loop of cross sectional area (S=lxw) in a uniform magnetic field ‘B’.

8M

b) Let 3 2 /x yA y z a xza Wb m

in a certain region of free space:

i. Show that . 0A

.

ii. At P(2,-1,3), find and B

7M

8.

a) Derive the expression for magnetic force between two current carrying different loops separated by small distance.

8M

b) A point charge for which 162 10Q C and 265 10m kg is moving in the combined

fields 100 200 300 /x y zE a a a V m

and 3 2x y zB a a a m

. If the charge

velocity at t=0 is 5(0) (2 3 4 ) 10 /x y zV a a a m s , find the unit vector showing the

direction in which the charge is accelerating at t=0.

7M

Unit – V

9. a) State and prove poynting theorem. 8M b) Write Maxwell’s equation for a general medium for time varying fields in differential and

integral forms 7M

10. a) Derive Maxwell’s equations from faraday’s law. 8M b) The conduction current through a wire with a conductivity, =107 (S/m) and relative

permittivity, εr = 1 is given by IC = 2sin(ωt) mA. f =109/2π (Hz), find the displacement current.

7M




CONTROL SYSTEMS




Unit – I

1. a) Explain how control systems are classified. 5M

b) Obtain the transfer function

1X s

F s for the system shown in Fig.1:

Fig.1

Given M=B1=K1=K0=1.

10M

2. a) Obtain the transfer function of a separately excited DC motor. 10M b) Obtain T-I analogous electrical network for mechanical system shown in Fig.2 and write

corresponding equations:

Fig.2

5M

Unit – II

3. a) For the electric network shown in Fig.3 draw block diagram and hence obtain the transfer functions V0(s)/Vin(s):

Fig.3

8M

b) Determine the transfer function c(s)/R(s) using Mason’s gain formula for the system shown in Fig.4:

Fig.4

7M

Cont…2

:: 2 ::

4. a) Obtain the transfer function C(s)/R(s) for the system shown in Fig.5 using block diagram method:

Fig.5

8M

b) Draw signal flow graph and find the transfer function for the block diagram using Mason’s gain formula:

Fig.6

7M

Unit – III

5.

a) A system is given by differential equation xydt

dy

dt

yd884

2

2

, where y = output,

x=input. Determine all time domain specifications for unit step input.

7M

b) Use Routh-Hurwitz criterion and determine: i. Number of roots in left half of S-plane ii. Number of roots in right half S-plane iii. Number of roots on imaginary axis. Characteristics equation is s4+2s2+1=0

8M

6. a) Find error constants Kp, Kv and Ka for a unity feedback system represented by OLTF

G(s)=)5)(2(

1002 sss

. Determine the steady state error value when the input is

r(t)=1+t+2t2. What is the type and order of the system?

6M

b) Draw the approximate Root locus diagram for a closed loop system whose loop transfer function is given by:

G(s) H(s) = )10)(5( ssS

K . Comment on stability.

9M

Unit – IV

7. a) Discuss the advantages and disadvantages of frequency domain analysis.

5M

b) Construct bode magnitude and phase plots for GH(s) =)101.0()1(

)11.0(1002

ssS

s Comment on

the closed loop stability of the system.

10M

8. a) Determine the transfer function for given magnitude plot.

Fig.7

5M

b) A negative feedback control system is characterized by open loop transfer function.

G(s) H(s) =)1(

5

ss. Investigate closed loop stability of the system using Nyquist stability

criteria.

10M

Cont…3

:: 3 ::

Unit – V

9. a) Why compensation is necessary in feedback control system? Draw the lag compensator network and derive its transfer function. Also draw Pole-zero plot.

7M

b) State equation of a control system is given by, 1 1

2 2

0 1

2 3

x x

x x

. Obtain the state

transition matrix.

8M

10. a) Draw the lead compensator network. Derive the transfer function. List at least two limitations of the same.

7M

b) Determine the state controllability and observability of the system described by:

3 1 1 0 1

1 0 1 0 0

0 0 1 2 1

x x u

, y = .011

100x

8M




ELECTRONIC CIRCUITS




Unit – I

1. a) How are amplifier classified? Discuss them briefly. 7M b) For the transistor amplifier shown in Fig. 1, calculate AI, AV, Ri and R0.

Assume hie = 1100 ohms, hre = 2.510-4, hfe = 50 and hoe = 1/40K.

Fig.1

8M

2. a) Draw the common gate configuration of JFET. Represent the same using AC equivalent model. With necessary equations for input and output impedances, explain the working.

10M

b) Compare the various configurations of BJT’s using h-parameters 5M

Unit – II

3. a) Draw the circuit of class B push pull amplifier without using transformer and explain its operation.

6M

b) A pair of transistors having parameters VCBO=40V, ICBO=3mA, Pcmax=10W, Icmax=3A and VCEsat=0.4V are used in a class B push pull amplifier. The supply voltage VCC=12V and load resistance RL=8ohms. The output transformer has a turns ratio of 2:1. Calculate power output, efficiency and collector dissipation for each transistor.

9M

4. a) What is cross over distortion in class- B Push pull amplifier? How is it eliminated? 9M b) Determine the maximum dissipation allowed for a 100 W silicon transistor (rated at

25°C) for a de-rating factor of 0.6W/°C at a case temperature of boiling temperature of water.

6M

Unit – III

5. a) Explain the working of a crystal oscillator. List its main advantages. 6M b) A CE transistor amplifier with no bypass capacitor shown in Fig.2 acts as a current series

feedback amplifier. Find gain, input and output resistances if RS=1KΩ, RE=1.5KΩ, RC=2KΩ, neglect the effect of R1 and R2 also neglect hre. Given hie=1KΩ, hfe=50,

and hoe = 25 mhos:

Fig.2

9M

Cont…2

:: 2 ::

6. a) Explain the working of a RC phase shift oscillator. 7M b) The voltage shunt feedback amplifier is shown in Fig.3. Determine Aif, Rif, Avf and Rof.

Given hie=1.2KΩ, hfe=60, hre=2.510-4 and hoe=20 mhos:

Fig.3

8M

Unit – IV

7. a) Design a low pass RC circuit as an integrator with RC>>T, RC=T and RC<<T. Draw the corresponding waveforms and equivalent equations.

8M

b) Design and explain the working of a double ended clipper to clip the input level sat +3V and +7V.Assume ideal diode. Let Vi=15 Sin ωt. Draw the output waveform and transfer characteristics.

7M

8. a) Draw a low pass circuit. Derive response for ramp input of this circuit and show input output characteristics.

7M

b) A symmetrical square wave of 200sec repletion period and 150V peak amplitude is

applied to a diode clamper. Assume Rf = 50 Ω, R = 10 KΩ, C = 1f and Vr = 0. Determine and sketch the output voltage wave form for first few cycles.

8M

Unit – V

9. a) With the help of a neat circuit diagram explain the working of regenerative comparator. 8M b) What are multivibrators? Classify the multivibrators and mention an application for each.

7M

10. a) Explain the working of a collector coupled astable multivibrator. 8M b) Design a fixed bias bistable multivibrator using Ge transistor having hfemin=50, VCC=10V,

Vcesat=0.1V, Vbesat=0.3V, Icsat=5mA. Assume Ibsat=1.5Ibmin. 7M




ELECTRONIC CIRCUITS




Unit – I

1. a) How are amplifier classified? Discuss them briefly. 7M b) For the transistor amplifier shown in Fig. 1, calculate AI, AV, Ri and R0.

Assume hie = 1100 ohms, hre = 2.510-4, hfe = 50 and hoe = 1/40K.

Fig.1

8M

2. a) Draw the common gate configuration of JFET. Represent the same using AC equivalent model. With necessary equations for input and output impedances, explain the working.

10M

b) Compare the various configurations of BJT’s using h-parameters 5M

Unit – II

3. a) Draw the circuit of class B push pull amplifier without using transformer and explain its operation.

6M

b) A pair of transistors having parameters VCBO=40V, ICBO=3mA, Pcmax=10W, Icmax=3A and VCEsat=0.4V are used in a class B push pull amplifier. The supply voltage VCC=12V and load resistance RL=8ohms. The output transformer has a turns ratio of 2:1. Calculate power output, efficiency and collector dissipation for each transistor.

9M

4. a) What is cross over distortion in class- B Push pull amplifier? How is it eliminated? 9M b) Determine the maximum dissipation allowed for a 100 W silicon transistor (rated at

25°C) for a de-rating factor of 0.6W/°C at a case temperature of boiling temperature of water.

6M

Unit – III

5. a) Explain the working of a crystal oscillator. List its main advantages. 6M b) A CE transistor amplifier with no bypass capacitor shown in Fig.2 acts as a current series

feedback amplifier. Find gain, input and output resistances if RS=1KΩ, RE=1.5KΩ, RC=2KΩ, neglect the effect of R1 and R2 also neglect hre. Given hie=1KΩ, hfe=50,

and hoe = 25 mhos:

Fig.2

9M

Cont…2

:: 2 ::

6. a) Explain the working of a RC phase shift oscillator. 7M b) The voltage shunt feedback amplifier is shown in Fig.3. Determine Aif, Rif, Avf and Rof.

Given hie=1.2KΩ, hfe=60, hre=2.510-4 and hoe=20 mhos:

Fig.3

8M

Unit – IV

7. a) Design a low pass RC circuit as an integrator with RC>>T, RC=T and RC<<T. Draw the corresponding waveforms and equivalent equations.

8M

b) Design and explain the working of a double ended clipper to clip the input level sat +3V and +7V.Assume ideal diode. Let Vi=15 Sin ωt. Draw the output waveform and transfer characteristics.

7M

8. a) Draw a low pass circuit. Derive response for ramp input of this circuit and show input output characteristics.

7M

b) A symmetrical square wave of 200sec repletion period and 150V peak amplitude is

applied to a diode clamper. Assume Rf = 50 Ω, R = 10 KΩ, C = 1f and Vr = 0. Determine and sketch the output voltage wave form for first few cycles.

8M

Unit – V

9. a) With the help of a neat circuit diagram explain the working of regenerative comparator. 8M b) What are multivibrators? Classify the multivibrators and mention an application for each.

7M

10. a) Explain the working of a collector coupled astable multivibrator. 8M b) Design a fixed bias bistable multivibrator using Ge transistor having hfemin=50, VCC=10V,

Vcesat=0.1V, Vbesat=0.3V, Icsat=5mA. Assume Ibsat=1.5Ibmin. 7M




AC MACHINES-I




Unit – I

1. a) What are the losses in a transformer? How are these losses are minimized? On what factors these losses depends?

8M

b) A transformer with normal voltage impressed has a flux density of 1.4wb/m2 and a core loss comprising of 1000w, eddy current loss and 3000w hysteresis loss. What do these losses become under the following conditions: i. Increasing the applied voltage by 10% at rated frequency ii. Reducing the frequency by 10% with normal voltage

7M

2. a) With a neat diagram explain an equivalent circuit of a transformer by conducting necessary tests on it.

8M

b) Resistances and leakage reactance of 10KVA, 50Hz, 2300/230V single phase distribution transformer are r1=3.96Ω, r2=0.0396Ω, x1=15.8Ω, x2=0.158Ω. If the transformer delivers rated KVA at 0.8 p.f. lagging to a load on the L.V. side, find the HV side voltage necessary to remain 230 V across load terminals. Also find the percentage voltage regulation.

7M

Unit - II 3. a) Define the regulation of a single phase transformer and derive an expression for full

load, leading power factor. 7M

b) A 30KVA, 2400/120V 50Hz transformer has a high voltage winding resistance of 0.1Ω and leakage reactance of 0.22Ω. The low voltage winding resistance is 0.035Ω and the leakage reactance is 0.012Ω. Find the equivalent resistance, reactance and impedance referred to the: i. High voltage side ii. The low voltage side

8M

4. a) Obtain the condition for maximum efficiency of a transformer. 5M b) Two transformers A and B are connected in parallel to a load of (2+j1.5)Ω. The

impedances in secondary side are ZA=(0.15+j0.5)Ω and ZB=(0.1+j0.6)Ω. The no load

terminal voltages are EA=207 00 V and EB=205 00 V. Find the power output and power factor of each transformer.

10M

Unit – III

5. a) Draw the Scott connection diagram and its phasor diagram. 7M b) What are the distinguishing features of Y-Y, Y-, -Y and - three phase connections?

What are their advantages and disadvantages?

8M

6. a) Explain the advantage of using tertiary winding in a bank of Y/Y transformer. 7M b) Explain with necessary diagrams how two 3 phase transformers can be used to convert a

3 phase supply to a two phase one. If the load is balanced on one side, show that it will be balanced on the other side.

8M

Cont…2

::2::

Unit – IV

7. a) Draw the power flow diagram of induction motor. 5M b) A 25HP, 400V, 50Hz, 4 pole, star connected induction motor has the following

impedances per phase in ohms referred to the stator side. Rs=0.641, Rr=0.332,

Xs=1.106, Xr=0.464 and Xmag=26.3. Rotational losses are assumed constant are 1.1KW and the core losses are assumed negligible. If the slip is 2.2 % at rated voltage and frequency. Find : i. Speed ii. Stator current iii. Power factor iv. Output and input power v. Efficiency of motor

10M

8. a) Draw complete torque-slip characteristics of a 3 phase induction motor. Show stating

torque, breakdown torque and rated torque. Mark the stable and unstable regions.

8M

b) Show that a rotating magnetic field with a constant speed is produced, when a 3 phase supply is given to the stator of a 3 phase induction motor.

7M

Unit – V

9. Draw the circle diagram of a 7.46KW, 200V, 50Hz, 3 phase slip ring induction motor with a star connected stator and rotor, a winding ratio of unity, a stator resistance of 0.38Ω/phase and a rotor resistance of 0.24Ω /phase. The following are the test readings, No load: 200V, 7.7A, Cosϴ0=0.195, short circuit test: 100V, 47.6A, CosϴSC=0.454. Find from the circle diagram: i. Starting torque ii. Maximum torque iii. Maximum power factor iv. The slip for maximum torque v. The maximum output

15M

10. a) Mention the different methods of speed control and discuss with neat figures, the speed control by injection of emf in the rotor circuit.

6M

b) Draw the circle diagram for a 20h.p, 400V, 50c/s, 3 phase Y connected induction motor from the following data (line values): No load test :400 volts, 9A, cosϴ=0.2 Blocked rotor test:- 200volts, 50A, cosϴ=0.4. From the circle diagram determine: i. Line current and power factor ii. Maximum horse power

9M




ELECTRICAL MACHINES-II




Unit – I

1. a) Show that the stator out put is the rotating magnetic field. 8M b) Rotor resistance and standstill reactance per phase of a three phase induction motor are

0.04Ω and 0.2Ω respectively. What should be the external resistance required at starting in rotor circuit to obtain: i. Maximum torque at start ii. 50% of maximum torque at start

7M

2. a) Sketch and explain the torque – slip characteristics of a three phase induction motor 6M b) A 3phase, 400V, 50Hz, 2 pole induction motor takes a power input of 20kW at its full

load speed of 980rpm. The total stator loss is 800W and friction and windage loss is 1000W. Calculate: i. Slip ii. Rotor copper loss per phase iii. Shaft torque iv)efficiency

9M

Unit – II

3. a) Explain the tests to be performed on 3 phase induction motor to plot the circle diagram. 7M b) A squirrel cage type induction motor when started by means of a star delta starter takes

200% of full load current (line) and develops 44% of full load torque at starting. Calculate the starting torque and current in terms of their full load values, if an auto - transformer with 75% tapping were employed.

8M

4. a) Explain any two speed control methods of three phase induction motor from stator side. 7M b) Draw the circle diagram from no load and short circuit test of a 3 phase, 14.92kW, 400V, 6

pole induction motor with the following test data (line values). No load Test: 400V, 11A, pf=0.2 S.C Test : 100V, 25 A , pf=0.4 Rotor copper loss at standstill is half the total copper loss. Find from the circle diagram, the full load: i. Line current ii. Slip iii. PF

8M

Unit – III

5. a) Derive an emf equation of a synchronous generator with winding factors. 8M b) A 4pole, 3phase, 50Hz, star connected alternator has 60 slots, with 4 conductors per

slot. Coils are short pitched by 3 slots. If the phase spread is 600, find the line voltage induced for a flux per pole of 0.943wb distributed sinusoidally in space. All the turns per phase are in series.

7M

Cont…2

:: 2 ::

6. a) Derive an expression for finding regulation of salient pole alternator using two reaction

theory. Draw the phasor diagram for lagging p.f. 7M

b) A 3.5 MVA, Y connected alternator rated at 4160volts at 50Hz, has the open circuit characteristic given by the following data.

Field current in amps

50 100 150 200 250 300 350 400 450

E.M.F. in volts 1620 3150 4160 4750 5130 5370 5550 5650 5750

A field current of 200A is found necessary to circulate full load current on short circuit of the alternator. Calculate the regulation for full load 0.8 p.f. by synchronous impedance method. Neglect resistance.

8M

Unit – IV

7. a) What is meant by synchronizing of alternators? Explain the procedure for synchronizing of alternators.

7M

b) Two identical 2MVA alternators operate in parallel. The governor of the first machine is such that the frequency drops uniformly from 50Hz on no – load to 47.5Hz on full load. The corresponding uniform speed drop of the second machine is 50Hz to 48Hz. How will they share a load of 3MW?

8M

8. a) Describe the effect of varying excitation upon armature current and power factor of a synchronous motor when the input power to the motor is maintained constant.

7M

b) A 75kW, 400V, 4 pole, 3 phase star connected synchronous motor has a resistance and synchronous reactance per phase of 0.04Ω and 0.4Ω respectively. Compute for full load 0. 8pf lead, the open circuit emf per phase. Assume an efficiency of 92.5%.

8M

Unit – V

9. a) Describe the constructional features and operating characteristics of a shaded pole motor.

8M

b) Explain double field revolving theory as applied to single phase induction motors.

7M

10. a) Describe the construction and applications of stepper motor. 7M b) Describe the construction principle and application of permanent magnet machines. 8M




POWER SYSTEM GENERATION




Unit – I

1. a) What data is necessary for a hydro-electric power design? 8M b) How water turbines are classified? What type of turbine is best suited for high and

medium head turbines?

7M

2. a) What is run off? Discuss about the hydrograph. 7M b) A model turbine has a size 1/10th of actual turbine and when tested under a head of 7.5

meters, it developed 30H.P at 450rpm. If the actual turbine operates at a head of 50 meters, what will be its speed and H.P?

8M

Unit – II

3. a) Describe the schematic arrangement of a thermal power station and explain the function of each briefly.

10M

b) The relation between water evaporated, coal consumption and energy generated for 8hours shift in a thermal power plant is given by M=15000+10KWh, C=5000+5KWh. To what limiting value does the water evaporation per Kg of coal consumed approach as the station output increases?

5M

4. a) Why pulverized fuel is preferred? What are the types of pulverized fuel burners? 8M b) With neat diagram explain the function of cooling tower.

7M

Unit – III

5. a) List and explain the classification of nuclear reaction. 5M b) Briefly explain the function of:

i. Control rods ii. Moderator iii. Reflector iv. Coolant in a nuclear power plant

10M

6. a) With a neat diagram explain the working of a gas power plant. 10M b) What are the factors to be considered to select site for a nuclear power plant?

5M

Unit – IV

7. a) On the basis of purpose discuss about different types of substation. 7M b) Explain with a neat sketch and necessary details about single bus bar and single bus bar

with bus sectionalizer.

8M

8. a) Explain about gas insulated substation mentioning its merits. 7M b) Explain the following in a substation:

i. Current transformer ii. Potential transformer iii. Bus coupler iv. Surge arrester

8M

Cont…2

::2::

Unit – V

9. a) Define the following terms: i. Diversity factor ii. Plant capacity factor iii. Plant utilization factor iv. Load curve

8M

b) A power station has to meet the following demand Group A: 200kW between 8AM and 6 PM Group B: 100kW between 6 AM and 10 AM Group C: 50kW between 6 AM and 10 AM Group D: 100kW between 10 AM and 6 PM and between 6PM and 6 AM. Plot the daily load curve and determine: i. Diversity Factor ii. Units generated per day iii. Load factor

7M

10. a) With necessary details derive an expression for most economical power factor. 9M b) A 440V, 50Hz, 3 phase line supplies 260kW of power to a load at 0.8pf lagging. It is

desired to raise the power factor to unity by installing static capacitors. Calculate the capacitance of each unit, if they are connected in: i. Star ii. Delta

6M


(AUTONOMOUS)

B. Tech IV Semester Supplementary Examinations, November - 2016 (Regulations: VCE-R11/R11A)

ELECTRICAL TECHNOLOGY (Common to Mechanical Engineering, Aeronautical Engineering & Civil Engineering)




Unit – I

1. a) With neat diagram give the classification of DC machines according to method of their

excitation.

8M

b) Derive the EMF equation of a D.C. Generator.

7M

2. a) Explain the Swinburn’s test and derive the efficiency equation for generator. 8M b) Explain back EMF and derive the torque equation of a D.C. motor.

7M

Unit – II

3. a) Explain various losses occurring in a single phase transformer. How these losses are minimized?

8M

b) Open-circuit and short –circuit tests on a single phase transformer gave the following results:

i. =200 V, =0.7 A, =20 W

ii. =10 V , =10 A, Ws=40 W Determine the equivalent circuit referred to primary side.

7M

4. a) Derive the EMF equation of transformer. 5M b) A 600KVA single phase transformer has an efficiency of 92% both at full load and half


10M

Unit – III

5. a) Explain any one starting method 3phase induction motor. 7M b) Draw and explain the power stages in an induction motor.

8M

6. a) Explain with rotor figures of squirrel cage and slip-ring induction motor construction. 6M b) A 3 phase, 6 pole, 50Hz induction motor has a slip of 1% at no load, and 3% at full load.

Determine: i. Synchronous speed ii. No load speed iii. Full load speed iv. Frequency of rotor at standstill v. Frequency of rotor current at full load

9M

Unit – IV 7. a) With sketches distinguish salient pole and non salient pole alternators. 7M b) A three-phase, 50Hz,16 pole generator with star connected winding has 144 slots with 10

conductors /slot. The flux/pole 24.8mwb is sinusoidally distributed. The coils are full-pitched. Find i. Speed ii. Line EMF (given winding factor Kd=0.96)

8M

Cont…2

:: 2 ::

8. a) Explain principle of operation of synchronous motor. 7M b) Explain the constructional details of an alternator.

8M

Unit – V

9. a) With the help of a schematic explain the working of an AC servomotor. 8M b) Explain the working of stepper motors. Mention its applications.

7M

10. a) With a neat sketch explain a capacitor start induction motor. 7M b) Explain the working principle of a shaded pole single phase induction motor. 8M


(AUTONOMOUS)


ELECTRICAL TECHNOLOGY (Mechanical Engineering)




Unit – I

1. a) State and explain Kirchoff’s laws. 6M b) Reduce the network shown in Fig.1 using source transformation across the terminals A

and B.

Fig.1

9M

2. a) Determine the equivalent resistance required by using star –delta transformation for the circuit shown in Fig.2:

Fig.2

9M

b) A resistance of 10Ω is connected in series with two resistances each 15Ω arranged in parallel. What resistance must be shunted across this series-parallel combination so that the total current taken by the circuit be 1.5A with 20V applied?

6M

Unit – II

3. a) State and explain super position theorem with example. 7M b) Obtain the Thevenin’s equivalent circuit at AB as shown in Fig.3:

Fig.3

8M

Cont…2

::2::

4. a) State and explain Norton’s theorem with example. 7M b) By mean of super position, find the current which flows in R2=20Ω for the circuit shown in

Fig.4:

Fig.4

8M

Unit - III 5. a) State and explain Faraday’s laws of electromagnetic induction and self - induced EMF. 8M b) Derive the EMF equation of a D.C. Generator.

7M

6. a) Explain the Swinburn’s test and derive the efficiency equation for generator. 8M b) Explain back EMF and derive the torque equation of a D.C. motor.

7M

Unit – IV 7. a) Explain various losses occurring in a single phase transformer. How these losses are

minimized? 8M

b) Open-circuit and short –circuit tests on a single phase transformer gave the following results:

iii. =200 V, =0.7 A, =20 W

iv. =10 V , =10 A, Ws=40 W Determine the equivalent circuit referred to primary side.

7M

8. a) Derive the EMF equation of transformer. 5M b) A 600KVA single phase transformer has an efficiency of 92% both at full load and half


10M

Unit – V

9. a) Explain any one starting method 3phase induction motor. 7M b) Draw and explain the power stages in an induction motor.

8M

10. a) Explain with rotor figures of squirrel cage and slip-ring induction motor construction. 6M b) A 3 phase, 6 pole, 50Hz induction motor has a slip of 1% at no load, and 3% at full load.

Determine: vi. Synchronous speed vii. No load speed viii. Full load speed ix. Frequency of rotor at standstill x. Frequency of rotor current at full load

9M


(AUTONOMOUS)


HYDRAULIC MACHINERY AND SYSTEMS (Mechanical Engineering)




Unit – I

1. a) Obtain the expression for force exerted on the curved vane. 6M b) A 75mm diameter jet having a velocity of 30m/s strikes a flat plate, the normal of which

is included at 45o to the axis of the jet. Find the normal pressure on the plat: i. When the plate is moving with a velocity of 15 m/s ii. Also determine the power and efficiency of the jet when the plate is moving

9M

2. a) Obtain an expression for the force applied on a stationery vertical plate. 5M b) A jet of water from a 50mm diameter nozzle impinges normally with a velocity of 30m/s

on a stationery flat plate. Find the force exerted by the jet on the plate.

10M

Unit – II

3. a) Briefly explain the different types of efficiencies of a turbine. 7M b) A Pelton wheel is to be designed for the following specifications: Shaft power 11772KW,

Head 380m, Speed 750rpm. The overall efficiency is 86%, the jet diameter is not to exceed one sixth of wheel diameter. Determine i) the number of jets required and ii) the diameter of the Jet. Take, Kv1=0.98 and Ku1=0.45.

8M

4. a) What is a Turbine? How they are classified? 6M b) A conical draft tube having inlet and outlet diameter as 1 m and 1.5m, discharges water

at outlet with a velocity of 2.5m/s. The total length of the draft tube is 6m and the length of the draft tube immersed in water is 1.2m. If the atmospheric pressure head is 10.3m of water and loss of head due to friction in draft tube is equal to 0.2 times the velocity head at outlet of the tube. Find the pressure head at inlet and the efficiency of draft tube.

9M

Unit – III

5. a) Define the term: Specific speed of a turbine and derive the expression for the same. 7M b) A turbine is to operate under a head of 25m at 200rpm. The discharge is 9 cumecs. If the

efficiency is 90%, determine the performance of the turbine under a head of 20m.

8M

6. a) What is negative slip in a reciprocating pump? Explain with a neat sketch the functioning of air vessels in a reciprocating pump.

7M

b) A double acting reciprocating pump running at 50rpm is discharging 900litres of water per minute. The pump has a stroke length of 400mm. The diameter of the piston is 250mm. the delivery and suction heads are 25m and 4m respectively. Find the slip of the pump and the power required to drive the pump.

8M

Cont…2

::2::

Unit - IV 7. a) With respect to centrifugal pumps, explain the working of following components in brief:

i. Volute casing ii. Vortex chamber iii. Guide blades

6M

b) A centrifugal pump running at 1450rpm discharges 110lt/s against a head of 2.3m. If the diameter of the impeller is 250mm and its width is 50mm. Find the vane angle at the outer periphery. Take manometric efficiency of the pump as 75%.

9M

8. a) Obtain an expression for specific speed of a centrifugal pump. 7M b) Two geometrically similar pumps are run at the same speed of 1000rpm. One has an

impeller diameter of 0.3m and lifts water at the rate of 20 lt/s against a head of 15m. Determine the head and impeller diameter of the pump to deliver half the discharge.

8M

Unit – V

9. a) Explain the term, hydraulic accumulator with a neat sketch, Obtain an expression for the capacity of a hydraulic accumulator.

7M

b) With the help of neat sketch explain the working of a gear pump.

8M

10. a) Explain with a neat sketch the working of an air lift pump. Mention its advantages. 7M b) A hydraulic lift is required to lift a load of 8KN through a height of 10 m; once in every

80 sec. the speed of the lift is 0.5m/s. Determine: i. The power required to drive the pump ii. The working period of the lift in sec iii. The idle period of the lift in sec

8M


(AUTONOMOUS)

B. Tech IV Semester Supplementary Examinations, December - 2016 (Regulations: VCE-R14)

HYDRAULIC MACHINERY AND SYSTEMS (Mechanical Engineering)




Unit – I

1. a) Obtain the expression for force exerted on the curved vane. 6M b) A 75mm diameter jet having a velocity of 30m/s strikes a flat plate, the normal of which

is included at 45o to the axis of the jet. Find the normal pressure on the plat: iii. When the plate is moving with a velocity of 15 m/s iv. Also determine the power and efficiency of the jet when the plate is moving

9M

2. a) Obtain an expression for the force applied on a stationery vertical plate. 5M b) A jet of water from a 50mm diameter nozzle impinges normally with a velocity of 30m/s

on a stationery flat plate. Find the force exerted by the jet on the plate.

10M

Unit – II

3. a) Briefly explain the different types of efficiencies of a turbine. 7M b) A Pelton wheel is to be designed for the following specifications: Shaft power 11772KW,

Head 380m, Speed 750rpm. The overall efficiency is 86%, the jet diameter is not to exceed one sixth of wheel diameter. Determine i) the number of jets required and ii) the diameter of the Jet. Take, Kv1=0.98 and Ku1=0.45.

8M

4. a) What is a Turbine? How they are classified? 6M b) A conical draft tube having inlet and outlet diameter as 1 m and 1.5m, discharges water

at outlet with a velocity of 2.5m/s. The total length of the draft tube is 6m and the length of the draft tube immersed in water is 1.2m. If the atmospheric pressure head is 10.3m of water and loss of head due to friction in draft tube is equal to 0.2 times the velocity head at outlet of the tube. Find the pressure head at inlet and the efficiency of draft tube.

9M

Unit – III

5. a) Define the term: Specific speed of a turbine and derive the expression for the same. 7M b) A turbine is to operate under a head of 25m at 200rpm. The discharge is 9 cumecs. If the

efficiency is 90%, determine the performance of the turbine under a head of 20m.

8M

6. a) What is negative slip in a reciprocating pump? Explain with a neat sketch the functioning of air vessels in a reciprocating pump.

7M

b) A double acting reciprocating pump running at 50rpm is discharging 900litres of water per minute. The pump has a stroke length of 400mm. The diameter of the piston is 250mm. the delivery and suction heads are 25m and 4m respectively. Find the slip of the pump and the power required to drive the pump.

8M

Cont…2

::2::

Unit - IV 7. a) With respect to centrifugal pumps, explain the working of following components in brief:

iv. Volute casing v. Vortex chamber vi. Guide blades

6M

b) A centrifugal pump running at 1450rpm discharges 110lt/s against a head of 2.3m. If the diameter of the impeller is 250mm and its width is 50mm. Find the vane angle at the outer periphery. Take manometric efficiency of the pump as 75%.

9M

8. a) Obtain an expression for specific speed of a centrifugal pump. 7M b) Two geometrically similar pumps are run at the same speed of 1000rpm. One has an

impeller diameter of 0.3m and lifts water at the rate of 20 lt/s against a head of 15m. Determine the head and impeller diameter of the pump to deliver half the discharge.

8M

Unit – V

9. a) Explain the term, hydraulic accumulator with a neat sketch, Obtain an expression for the capacity of a hydraulic accumulator.

7M

b) With the help of neat sketch explain the working of a gear pump.

8M

10. a) Explain with a neat sketch the working of an air lift pump. Mention its advantages. 7M b) A hydraulic lift is required to lift a load of 8KN through a height of 10 m; once in every

80 sec. the speed of the lift is 0.5m/s. Determine: iv. The power required to drive the pump v. The working period of the lift in sec vi. The idle period of the lift in sec

8M




THERMAL ENGINEERING-I

(Mechanical Engineering)



Unit – I

1. a) Why the actual cycle efficiency is much lower than the air-standard cycle efficiency? List the major losses and differences in actual engine and air-standard cycles.

7M

b) Briefly explain the following: i. Time loss factor ii. Heat loss factor iii. Exhaust blow down factor iv. Loss due to rubbing friction

8M

2. a) Discuss briefly the loss due to gas exchange process. 7M b) Define volumetric efficiency and discuss the effect of various factors affecting the

volumetric efficiency.

8M

Unit – II

3. a) What is detonation? What is its effect? 7M b) What is the effect of the following engine variables on detonation of an SI engine?

i. Compression ratio ii. Supercharging, iii. Increase in coolant temperature iv. Spark plug timing

8M

4. a) With the help of P-θ diagram explain the different stages of CI engine combustion. 8M b) What is delay period? How do the following variables affect the Delay period in CI

engines? i. Injection pressure ii. Fuel temperature iii. Injection Advance iv. Compression ratio

7M

Unit – III

5. a) What is performance of an engine? What are the basic engine parameters used to evaluate the performance of an engine?

7M

b) How the frictional power is determined using: i. Willan’s Line method ii. Morse Test

8M

Cont…2

::2::

6. a) A 6 cylinder 4 stroke gas engine with a stroke volume of 1.75 liters develops 26.3 kW at

504 rpm. The m.e.p. is 6 bar. Find the average number of times each cylinder misfires in one minute.

7M

b) A single cylinder 4 stroke diesel engine gave the following results while running at full load. Area of the indicator card=300 mm2, Length of the diagram=40 mm, Spring constant=1 bar/mm, Engine Speed=400 rpm, Load on the brake=370N, Spring Balance reading=50N, Brake Drum Dia=1.2m, Fuel Consumption=2.8kg/hr, CV of Fuel=42800kJ/kg, Cylinder dia=160mm, Stroke=200mm, Calculate: i. IMEP ii. BMEP iii. BP iv. BTE

8M

Unit – IV

7. a) Define the following terms with respect to reciprocating air compressor: i. Compressor capacity ii. Compression ratio iii. Mean Effective Pressure iv. Swept volume v. Free air delivery

10M

b) Derive an expression for work done for single stage reciprocating air compressor considering clearance volume.

5M

8. a) What are the disadvantages of single stage air compressor? Explain how these advantages are overcome in multi stage compressor?

6M

b) A single acting reciprocating air compressor has a cylinder dia and stroke 200 mm and 300 mm. Compressor sucks air at 1 bar and 270 C and delivers at 8 bar while running at 100 rpm. Find: i. Indicated power ii. Mass of air delivered by the compressor/min iii. Temperature of air delivered by the compressor. Index of compression is 1.25

9M

Unit – V

9. a) Analyze how the losses are responsible for variation in the actual and ideal centrifugal compression work.

7M

b) Analyze the work done on an Axial Flow Compressor with the help of inlet and outlet velocity diagrams.

8M

10. a) Air at a temperature of 300 k flows in a centrifugal compressor running at 18000 rpm. Isentropic total head efficiency=0.76, Outer dia of the blade tip=550 mm, Slip factor=0.82. Calculate: i. The temperature rise of air passing through the compressor ii. The static pressure ratio Assume that the absolute velocities of air at inlet and exit of the compressor are same Take Cp=1.005 kJ/kg K.

7M

b) An axial flow compressor with an overall isentropic efficiency of 85% draws air at 200C and compresses it in the pressure ratio of 4:1. The mean blade speed and flow velocity are constant through out the compressor. Assume 50% reaction blading and taking blade velocity as 180 m/s and work input factor as 0.82. Calculate: i. Flow velocity ii. Number of stages

8M




THERMAL ENGINEERING-I




Unit – I

1. a) Why the actual cycle efficiency is much lower than the air-standard cycle efficiency? List the major losses and differences in actual engine and air-standard cycles.

7M

b) Briefly explain the following: v. Time loss factor vi. Heat loss factor vii. Exhaust blow down factor viii. Loss due to rubbing friction

8M

2. a) Discuss briefly the loss due to gas exchange process. 7M b) Define volumetric efficiency and discuss the effect of various factors affecting the

volumetric efficiency.

8M

Unit – II

3. a) What is detonation? What is its effect? 7M b) What is the effect of the following engine variables on detonation of an SI engine?

v. Compression ratio vi. Supercharging, vii. Increase in coolant temperature viii. Spark plug timing

8M

4. a) With the help of P-θ diagram explain the different stages of CI engine combustion. 8M b) What is delay period? How do the following variables affect the Delay period in CI

engines? v. Injection pressure vi. Fuel temperature vii. Injection Advance viii. Compression ratio

7M

Unit – III

5. a) What is performance of an engine? What are the basic engine parameters used to evaluate the performance of an engine?

7M

b) How the frictional power is determined using: iii. Willan’s Line method iv. Morse Test

8M

Cont…2

::2::

6. a) A 6 cylinder 4 stroke gas engine with a stroke volume of 1.75 liters develops 26.3 kW at 504 rpm. The m.e.p. is 6 bar. Find the average number of times each cylinder misfires in one minute.

7M

b) A single cylinder 4 stroke diesel engine gave the following results while running at full load. Area of the indicator card=300 mm2, Length of the diagram=40 mm, Spring constant=1 bar/mm, Engine Speed=400 rpm, Load on the brake=370N, Spring Balance reading=50N, Brake Drum Dia=1.2m, Fuel Consumption=2.8kg/hr, CV of Fuel=42800kJ/kg, Cylinder dia=160mm, Stroke=200mm, Calculate: v. IMEP vi. BMEP vii. BP viii. BTE

8M

Unit – IV

7. a) Define the following terms with respect to reciprocating air compressor: vi. Compressor capacity vii. Compression ratio viii. Mean Effective Pressure ix. Swept volume x. Free air delivery

10M

b) Derive an expression for work done for single stage reciprocating air compressor considering clearance volume.

5M

8. a) What are the disadvantages of single stage air compressor? Explain how these advantages are overcome in multi stage compressor?

6M

b) A single acting reciprocating air compressor has a cylinder dia and stroke 200 mm and 300 mm. Compressor sucks air at 1 bar and 270 C and delivers at 8 bar while running at 100 rpm. Find: iv. Indicated power v. Mass of air delivered by the compressor/min vi. Temperature of air delivered by the compressor. Index of compression is 1.25

9M

Unit – V

9. a) Analyze how the losses are responsible for variation in the actual and ideal centrifugal compression work.

7M

b) Analyze the work done on an Axial Flow Compressor with the help of inlet and outlet velocity diagrams.

8M

10. a) Air at a temperature of 300 k flows in a centrifugal compressor running at 18000 rpm. Isentropic total head efficiency=0.76, Outer dia of the blade tip=550 mm, Slip factor=0.82. Calculate: iii. The temperature rise of air passing through the compressor iv. The static pressure ratio Assume that the absolute velocities of air at inlet and exit of the compressor are same Take Cp=1.005 kJ/kg K.

7M

b) An axial flow compressor with an overall isentropic efficiency of 85% draws air at 200C and compresses it in the pressure ratio of 4:1. The mean blade speed and flow velocity are constant through out the compressor. Assume 50% reaction blading and taking blade velocity as 180 m/s and work input factor as 0.82. Calculate: iii. Flow velocity iv. Number of stages

8M


A1313



PRODUCTION TECHNOLOGY




Unit – I

1. a) Define Casting. Mention its advantages and disadvantages. 10M b) Differentiate between pressurized and unpressurized gating system.

5M

2. a) Describe the need for investment casting and explain the process with a neat sketch. 10M b) With the help of a neat sketch explain about blind riser.

5M

Unit – II

3. a) With a sketch explain the welding process used for joining railway tracks. 9M b) Differentiate between Arc and Resistance welding.

6M

4. a) Define welding. With a sketch explain the types of welded joints. 8M b) Mention the characteristics of good weld.

7M

Unit – III

5. a) What are the metallurgical changes taking place in the heat affected zone? 8M b) Define brazing and soldering process. Give their applications.

7M

6. a) List out the various Destructive testing methods to test a welded joint and explain any one.

10M

b) With a neat sketch, explain TIG welding process.

5M

Unit – IV

7. a) Explain planetary rolling mill with a neat sketch. 7M b) Draw a simple sketch showing rolling process and make a short note on deformation of

grains in rolling.

8M

8. a) Explain spinning and bending operations. 8M b) With a neat sketch explain tube drawing operation.

7M

Unit – V

9. a) Explain Impact and hydrostatic extrusion. 8M b) Explain hot and cold extrusion and mention the applications for each.

7M

10. a) List and explain any two methods of processing plastics. 10M b) List the properties of plastics. 5M


A2315



MANUFACTURING TECHNOLOGY-I




Unit – I

1. a) Define Casting. Mention its advantages and disadvantages. 10M b) Differentiate between pressurized and unpressurized gating system.

5M

2. a) Describe the need for investment casting and explain the process with a neat sketch. 10M b) With the help of a neat sketch explain about blind riser.

5M

Unit – II

3. a) With a sketch explain the welding process used for joining railway tracks. 9M b) Differentiate between Arc and Resistance welding.

6M

4. a) Define welding. With a sketch explain the types of welded joints. 8M b) Mention the characteristics of good weld.

7M

Unit – III

5. a) What are the metallurgical changes taking place in the heat affected zone? 8M b) Define brazing and soldering process. Give their applications.

7M

6. a) List out the various Destructive testing methods to test a welded joint and explain any one.

10M

b) Write a note on cutting of ferrous metals.

5M

Unit – IV

7. a) Explain the different types of forging defects and their remedial measures. 9M b) List the different types of forging operations and explain any one in detail.

6M

8. a) Explain spinning and bending operations. 8M b) With a neat sketch explain tube drawing operation.

7M

Unit – V

9. a) Explain Impact and hydrostatic extrusion. 8M b) Explain hot and cold extrusion and mention the applications for each.

7M

10. a) List and explain any two methods of processing plastics. 10M b) List the properties of plastics. 5M


(AUTONOMOUS)


KINEMATICS OF MACHINERY (Mechanical Engineering)




Unit – I

1. a) Sketch and explain the following mechanisms:

i. Elliptical Trammel mechanism

ii. Crank and slotted lever quick return motion mechanism

10M

b) Sketch the following:

i. Screw pair

ii. Spherical pair

5M

2. a) With the help of neat diagrams explain any two inversions of four bar chain

mechanism.

10M

b) Sketch and explain Oldham’s coupling.

5M

Unit – II

3. a) Explain pantograph mechanism with neat sketch. 7M b) Explain with neat Sketches of Watt’s and Chebychev’s straight line mechanisms.

8M

4. The four bar linkage shown in Fig.1 below is driven by crank AD with an instantaneous angular velocity of 10.5rad/s ccw and a retardation of 26rad/s2 in CCW direction. Find the instantaneous velocities and accelerations of points F and G and the angular velocities and accelerations of links BC and CD at the position shown. Use the following dimensions in mm. AB= 50, BC = 66, CD = 56, AD = 100, Bf = 45, CF = 30, CG = 24, DG = 44.

15M

Fig.1

Unit – III

5. For the configuration of slider crank mechanism shown in Fig.2 below, calculate: i. Velocities and accelerations of slider B and point E ii. Angular velocity and accleration of the link AB. OA rotates at 20rad/s (CCW)

Fig.2

15M

Cont…2

:: 2 ::

6. a) Explain with neat sketch Davis steering gear mechanism. 7M b) For the configuration of the slider crank mechanism shown, locate all instantaneous

centres. Determine the velocity of slider crank rotates at 40rad/s (CCW).

8M

Unit – IV

7. A cam drives a flat reciprocating follower in the following manner: During first 120° rotation of the cam, follower moves outwards through a distance of 20mm with simple harmonic motion. The follower dwells during next 30° of cam rotation. During next 120° of cam rotation, the follower moves inwards with simple harmonic motion. The follower dwells for the next 90° of cam rotation. The minimum radius of the cam is 25mm. Draw the profile of the cam.

15M

8. a) State and prove law of gearing. 8M b) Two involute gears in mesh have 20 degree pressure angle. The gear ratio is 3 and the

number of teeth on the pinion is 24. The teeth have a module of 6 mm. The pitch line velocity is 1.5 m/s and addendum equals to 1 module. Determine the path of contact, arc of contact, angle of action of the pinion.

7M

Unit – V

9. a) Derive an expression for the effect of slip on the velocity ratio in belt drives. 8M b) Derive an expression for effect of creep on velocity ratio in belt drives.

7M

10. a) Explain different types of gear trains with neat sketches and mention some applications.

8M

b) For the epicyclic gear train shown in Fig.3, find the angular velocity of the internal ring gear 5.

Fig.3

7M

Hall TicketNo: Question Paper Code : A2317

(AUTONOMOUS)


KINEMATICS OF MACHINERY (Mechanical Engineering)




Unit – I

1. a) Sketch and explain the following mechanisms:

iii. Elliptical Trammel mechanism

iv. Crank and slotted lever quick return motion mechanism

10M

b) Sketch the following:

iii. Screw pair

iv. Spherical pair

5M

2. a) With the help of neat diagrams explain any two inversions of four bar chain

mechanism.

10M

b) Sketch and explain Oldham’s coupling.

5M

Unit – II

3. a) Explain pantograph mechanism with neat sketch. 7M b) Explain with neat Sketches of Watt’s and Chebychev’s straight line mechanisms.

8M

4. The four bar linkage shown in Fig.1 below is driven by crank AD with an instantaneous angular velocity of 10.5rad/s ccw and a retardation of 26rad/s2 in CCW direction. Find the instantaneous velocities and accelerations of points F and G and the angular velocities and accelerations of links BC and CD at the position shown. Use the following dimensions in mm. AB= 50, BC = 66, CD = 56, AD = 100, Bf = 45, CF = 30, CG = 24, DG = 44.

15M

Fig.1

Unit – III

5. For the configuration of slider crank mechanism shown in Fig.2 below, calculate: i. Velocities and accelerations of slider B and point E ii. Angular velocity and accleration of the link AB. OA rotates at 20rad/s (CCW)

Fig.2

15M

Cont…2

:: 2 ::

6. a) Explain with neat sketch Davis steering gear mechanism. 7M b) For the configuration of the slider crank mechanism shown, locate all instantaneous

centres. Determine the velocity of slider crank rotates at 40rad/s (CCW).

8M

Unit – IV

7. A cam drives a flat reciprocating follower in the following manner: During first 120° rotation of the cam, follower moves outwards through a distance of 20mm with simple harmonic motion. The follower dwells during next 30° of cam rotation. During next 120° of cam rotation, the follower moves inwards with simple harmonic motion. The follower dwells for the next 90° of cam rotation. The minimum radius of the cam is 25mm. Draw the profile of the cam.

15M

8. a) Derive an expression for the effect of slip on the velocity ratio in belt drives. 8M b) Derive an expression for effect of creep on velocity ratio in belt drives.

7M

Unit – V

9. a) State and prove law of gearing. 8M b) Two involute gears in mesh have 20 degree pressure angle. The gear ratio is 3 and

the number of teeth on the pinion is 24. The teeth have a module of 6 mm. The pitch line velocity is 1.5 m/s and addendum equals to 1 module. Determine the path of contact, arc of contact, angle of action of the pinion.

7M

10. a) Explain different types of gear trains with neat sketches and mention some applications.

8M

b) For the epicyclic gear train shown in Fig.3, find the angular velocity of the internal ring gear 5.

Fig.3

7M

Hall TicketNo: Question Paper Code: A1014



PROBABILITY AND STATISTICS




Unit – I

1. a) A box contains 4 black, 5 white and 6 red balls. If 2 balls are drawn at random, what is the probability that: i. Both are red ii. One is black and one is white

7M

b) In a bolt factory machine A, B, C manufacture 20%, 30%, 50% of the total of their output and 6%,3% and 2% are defective. A bolt is drawn at random and found to be defective. Find the probabilities that it is manufactured from: i. Machine A ii. Machine B

8M

2. a) Three students A,B,C write an entrance examination and their chances of passing are 1/2, 1/3 and 1/4,respectively. Find the probability that: i. At least one of them pass ii. All of them pass

8M

b) In a certain college 25% of boys and 10% of girls are studying Mathematics. The girls constitute 60% of the student body. What is the probability that Mathematics is being studied? If a student is selected at random and is found to be studying Mathematics, find the probability that the student is a boy.

7M

Unit – II

3. a) Out of 800 families with 5 children each, how many would you expect to have: i. 3 boys ii. 5 girls iii. At least one boy? Assume equal probabilities for boys and girls

8M

b) If the masses of 300 students are normally distributed with mean 68 kgs and standard deviation 3kgs.How many students have masses i)greater than 72kgs ii) less than or equal to 64 kgs.

7M

4. a) The mean height of students in a college is 155 cms and standard deviation is 15.what is the probability that the mean height of 36 students is less than 157 cms.

8M

b) A random sample of size 100 is taken from an infinite population having the mean

µ=76 and variance s2 =256. What is the probability that x will be between 75 and 78?

7M

Unit – III

5. a) A random sample of 100 factory workers in a large city revealed mean weekly earnings of Rs.487 with a standard deviation of Rs 48. With what level of confidence can we assert that the average weekly salary of all factory workers in the city is between Rs.472 and Rs.502?

8M

b) A sample of 400 items is taken from a population whose standard deviation is 10. The mean of the sample is 40. Test whether the sample has come from a population with mean 38. Also calculate 95% confidence interval for the population.

7M

Cont…2

:: 2::

6. a) Random samples of 400 men and 600 women were asked whether they would like to have a flyover near their residence. 200 men and 325 women were in favour of the proposal. Test the hypothesis that proportions of men and women in favour of the proposal are same at 5% level.

8M

b) In a sample of 1000 people in Karnataka 540 are rice eaters and rest are wheat eaters. Can we assume that both rice and wheat are equally popular in this state at 1% level of significance?

7M

Unit – IV

7. a) A mechanist is making engine parts with axle diameters of 0.7inches. A random sample of 10 parts shows a mean diameter of 0.742 inch and standard deviation of 0.04 inch. Compute the statistics you would use to test whether the work is meeting the specification.

8M

b) It is known that the mean diameters of rivets produced by two firms A and B are practically the same, but the standard deviation may differ. For 22 rivets produced by firm A, the standard deviation is 2.9mm, while for 16 rivets manufactured by firm B, the standard deviation is 3.8mm. Compute the statistics you would use to test whether the products of firm A have the same variability as those of the firm B and test its significance.

7M

8. a) A sample analysis of examination results of 500 students was made. It was found that 220 students had failed, 170 had secured a third class, 90 were placed in second class and 20 got a first class. Do these figures commensurate with the general examination result which is in the ration 4:3:2:1 for the various categories respectively.

8M

b) The means of two random samples of sizes 9 and 7 are 196.42 and 198.82 respectively. The sum of the squares of the deviations from the mean is 26.94 and 18.73 respectively. Can the sample be considered to have been drawn from the same normal population?

7M

Unit – V

9. a) A self service canteen employs one cashier at its counter. 8 customers arrive per every 10 min on an average. The cashier can serve on average one per minute. Assume that arrivals are Poisson and the service time distribution is exponential. Determine: i. Average number of customers in the system ii. Average queue length iii. Average time a customer spends in the system

8M

b) The mean rate of arrivals of planes of an airport during the peak period is 20 hours. The number of arrivals in any hour follows a Poisson distribution. When there is congestion the planes are forced to fly over the field in the stack awaiting the landing of other planes that arrive earlier. 60 planes per hour can land in good weather and 30 planes per hour can land in bad weather. i. How many planes would be flying over the field in the stack on an average in

good weather and in bad weather ii. How long a plane would be in the stack in the process of landing in good and

bad weather

7M

10. a) A car park contains 5 cars. The arrival of cars is Poisson with a mean rate of 10 per hour. The length of time each car spends in the car park has negative exponential distribution with mean of 2 hours. How many cars are in the car park on average and what is the probability of a newly arriving customer finding the car park full and having to park his car elsewhere?

8M

b) A one person barber shop has six chairs to accommodate people waiting for haircut. Assume that customers who arrive when all the six chairs are full leave without entering the shop. Customers arrive at the average rate of 3per hour and spend an average of 15min for service. Find i. The probability that a customer can get directly into the barber chair upon

7M

arrival ii. Expected number of customers waiting for a hair cut

HallTicketNo: Question Paper Code: A1604



COMPUTER GRAPHICS (Common to Computer Science and Engineering & Information Technology)



Unit – I

1. a) Differentiate between raster scan display and vector scan display. 7M b) Explain in detail the importance of graphics in:

i. Computer aided design ii. Entertainment iii. Image Processing iv. Graphs and charts

8M

2. a) Briefly explain general classifications for graphics software. 8M b) Bring out the significance of random scan systems.

7M

Unit – II

3. a) Describe Bresenham’s line drawing algorithm. 7M b) Explain the midpoint algorithm for circle generation.

8M

4. a) Narrate the need for flood fill algorithm. Write a C function for the same. 10M b) What are the two basic approaches to area filling on raster systems?

5M

Unit – III

5. a) Derive the transformation matrix for rotation at a given point. 7M b) Give the explicit form of the 3*3 matrix representing the transformation: scaling

by a factor of 2 in the x-direction and then rotation about (2, 1).

8M

6. a) Derive the windows to viewport transformation equation. 8M b) Explain Cohen Sutherland line clipping algorithm.

7M

Unit – IV

7. a) Discuss briefly two classifications of Parallel projections. 8M b) Explain three dimensional transformation pipeline from modeling co-ordinates

to final co-ordinates.

7M

8. a) With neat sketches demonstrate sequence of transformations for scaling an object relative to a selected fixed point in 3D.

8M

b) Explain Hermite curve technique and illustrate its blending function derivation.

7M

Unit – V

9. a) Describe briefly back face detection method 10M b) Discuss two types of visible surface detection algorithms.

5M

10. What is computer animation? Explain the steps for design of animation sequence. 15M

HallTicketNo: Question Paper Code : A1704

(AUTONOMOUS)


AERODYNAMICS-I (Aeronautical Engineering)

Date: 01 December, 2016FN Time: 3 hours Max Marks: 75



Unit – I

1. Explain the significance of different types of flow used in the study of aerodynamics.

15M

2. a) Explain flow similarity and its significance. 6M b) With a neat sketch, explain in details the airfoil nomenclature and

characteristics.

9M

Unit – II

3. Consider a non-lifting flow over a circular cylinder and derive the expression following: i. Steam function ii. Pressure coefficient Draw a neat sketch of pressure coefficient distribution over the surface of circular cylinder for inviscid incompressible flow.

15M

4. a) Explain Kelvins circulation theorem and starting vortex. 5M

b) Show that both φ and ψ functions satisfies, the Laplace equation for irrotational incompressible flow and Tabulate the velocity, φ and ψ functions for: i. Vortex flow ii. Doublet flow

10M

Unit – III

5. a) Derive an expression for lift coefficient and moment coefficient of cambered

airfoil.

10M

b) Explain briefly about Kutta Condition.

5M

6. a) Explain thin airfoil theory. 10M

b) Express the algebraic form of Kutta Joukowski theorem and explain the

parameters in the equation.

5M

Unit – IV

7. Explain the following:

i. Biot savart’s law

ii. Helmholtx theorem

15M

8. What is the downwash velocity induced by the pair of wingtip vortices along the

bound vortex? Derive an expression for this using Biot savart’s law.

15M

Unit - V 9. Calculate the pressure coefficient distribution around a circular cylinder using

numerical Source panel technique.

15M

10. Consider lifting flow over an arbitrary body and derive an expression for total surface velocity induced at the ith control point employing Vortex panel method and application of Kutta condition.

15M

HallTicketNo: Question Paper Code: A1705



AIRCRAFT PRODUCTION TECHNOLOGY

(Aeronautical Engineering)

Date: 02 December,2016FN Time: 3 hours Max Marks: 75


Unit – I

1. a) Explain shell moulding technique in detail and write some advantages. 8M b) Explain the principle of investment casting, write some applications.

7M

2. a) Write a note on moulding material properties. Write a note on moulding sand composition.

10M

b) Explain Centrifugal Casting with help of neat diagram. What are its advantages and disadvantages?

5M

Unit – II

3. a) Explain Gas Welding process with a neat sketch. 7M b) Explain the operating principle of Arc welding equipment by using diagram.

8M

4. a) Explain Resistance Welding process. 7M b) Explain about Soldering and brazing techniques and what are the different

types of weld defects.

8M

Unit – III

5. With the help of schematic diagram, explain the working of Lathe machine.

15M

6. List down the various sheet metal forming processes and explain each briefly.

15M

Unit – IV

7. Write short notes on: i. Abrasive jet machining ii. Ultrasonic machining

15M

8. a) Explain the Principle of Electron Discharge Machining with a sketch. 8M b) Write a note on annealing and normalizing heat treatment.

7M

Unit – V

9. What are the various ISO and QS standards of quality?

15M

10. a) Explain the main steps of Liquid Penetrant Inspection with sketch. 8M b) Define the terms Quality and Reliability. 7M




AEROSPACE VEHICLE STRUCTURES-I

(Aeronautical Engineering)



Unit – I

1. a) Explain the statically determinate and indeterminate structure with example. 6M b) A beam ABC of length 2L rests on three supports equally spaced and is loaded with UDL

w/unit length throughout the length of the beam. Draw the SF and BM diagram.

Fig.1

9M

2. Determine the deflection of the mid span point of the linearly elastic, simply supported beam shown in Fig.2; the flexural rigidity of the beam is EI.

Fig.2

15M

Unit – II

3. a) What are the different types of elastic foundations? Give examples. 6M b) Derive critical loads for column.

9M

4. a) What are the assumptions made in Beams with elastic supports? 5M b) Derive differential equation for a beam resting on elastic foundation. 10M

Unit – III

5. At a particular point in a structural member, a two-dimensional stress system exists where ςx=60N/mm2,ςy = - 40 N/mm2 and τxy=50 N/mm2. If the Young’s modulus E=200000=N/mm2 and Poisson’s ratio ν = 0.3, calculate the direct strain in the x and y directions and the shear strain at the point. Also calculate the principal strains at the point and their inclination to the plane on which ςx acts; verify these answers using a graphical method.

15M

6. A rectangular element in a linearly elastic isotropic material is subjected to tensile stresses of 83 and 65 N/mm2 on mutually perpendicular planes. Determine the strain in the direction of each stress and in the direction perpendicular to both stresses. Find also the principal strains, the maximum shear stress, the maximum shear strain, and their directions at the point. Take Young’s modulus E=2, 00,000 N/mm2 and Poisson’s ratio ν=0.3.

15M

Cont…2

:: 2 ::

Unit – IV

7. a) Write a note on Principle of virtual Displacements. 8M b) Explain Maxell’s reciprocal theorem.

7M

8. Derive an expression for total potential energy.

1

n

r r

r

TPE U V U P

The symbols used in the above expression have their usual meanings.

15M

Unit – V

9. a) Briefly explain torsion of closed section with Bredt-Batho theory. 6M b) Derive expression of shear of closed section beam.

9M

10. A wing spar has the dimensions shown in Fig.3, and carries a uniformly distributed load of 15kN/m along its complete length. Each flange has a cross-sectional area of 500 mm2with the top flange being horizontal. If the flanges are assumed to resist all direct loads while the spar web is effective only in shear, determine the flange loads and the shear flows in the web at sections 1 and 2 m from the free end.

Fig.3

15M


(AUTONOMOUS)


MECHANISMS AND MECHANICAL DESIGN (Aeronautical Engineering)




Unit – I

1. a) Differentiate giving example: i. Lower and higher pairs ii. Closed and unclosed pair iii. Turning and Rolling pair

6M

b) Discuss various types of constrained motion.

9M

2. a) Explain and sketch elliptical trammel. 7M b) Explain any two inversion of single slider crank chain.

8M

Unit – II

3. For the configuration of slider crank mechanism shown in Fig.1 below. Calculate: i. Acceleration of slider at B ii. Acceleration of point E iii. Angular acceleration of link AB If crank OA rotates at 20rad/s CCW

Fig.1

15M

4. The crank and connecting rod of reciprocating engine is 200mm and 700mm respectively. The crank is rotating in clockwise direction at 120rad/s. Find with the help of Klein’s construction: i. Velocity and acceleration of the piston ii. Velocity and acceleration at the midpoint of connecting rod iii. Angular velocity and angular acceleration of the connecting rod at the instant when the

crank is at 300 to IDC

15M

Unit – III

5. a) Describe the procedure for locating instantaneous center. 5M b) Explain the three types of instantaneous center of rotation and the significance of each

type.

10M

6. a) What do you mean by gyroscopic couple? Derive a relation for its magnitude. 7M b) Derive an expression for effect of gyroscopic couple and centrifugal couple of stability of

two-wheel vehicle taking a turn.

8M

Cont…2

:: 2 ::

Unit – IV

7. The following data refers to a cam profile in which the follower moves with uniform acceleration and deceleration during the ascent and descent. Also find velocity and acceleration. Minimum radius of cam = 25mm Roller radius = 7.5mm, Lift = 28mm Offset of follower axis = 12mm towards right Angle of ascent = 600 Angle of descent = 900 Angle of dwell between ascent and descent = 450 Speed of cam = 200rpm

15M

8. A cam of base circle radius 50 mm is to operate a roller follower of 20 mm diameter. The follower is to have SHM. The speed of the cam is 360 rpm clockwise. Draw the cam profile for the cam lift of 40 mm. Angle of ascent = 600 , angle of dwell = 400 and angle of descent = 900, followed by dwell again. Also calculate the maximum velocity and acceleration during ascent and descent.

15M

Unit – V

9. a) With a sketch locate the following on a spur gear: i. Addendum Circle ii. Dedendum Circle iii. Pitch Circle iv. Clearance Circle

7M

b) A helical valve spring is to be designed for an operating load range of 1 kN to 1.3kN. The initial compression of the spring 50mm for the load of 1 kN. Assume a spring index of 10 and allowable shear stress of spring material is 480 MPa and the Modulus of Rigidity is 82.7 GPa.

8M

10. a) Explain with reference to gear trains: i. Train Value ii. Reverted Gear Train

5M

b) Two shafts A and B are coaxial. A gear C (50 teeth) is rigidly mounted on a shaft A. A compound gear D-E gears with C and an internal gear G. D has 20 teeth and gears with C and E has 35 teeth and gears with an internal gear G. Gear G is fixed and is concentric with the shaft axis. The compound gear D-E is mounted on a pin which projects from an arm keyed to the shaft B. Sketch the arrangement and find the number of teeth on internal gear G assuming that all gears have the same module. If shaft A rotates at 110rpm, find the speed of shaft B.

10M

Hall Ticket No: Question Paper Code :

A2107

(AUTONOMOUS)


CONCRETE TECHNOLOGY (Civil Engineering)




Unit – I

1. a) Describe the hydration reaction of important Bogue compounds and indicate the products of hydration.

8M

b) Explain the effect of size, shape, texture and grading of aggregates on the strength of concrete.

7M

2. a) Explain the two – phase micro structure of concrete and discuss the relative contribution of each phase on the strength of concrete.

6M

b) Discuss the two opposing effects on the strength that are caused by increasing the maximum size of the aggregate in a concrete mixture. What is bulking of sand? Discuss the bulking phenomenon of fine aggregate.

9M

Unit – II

3. a) What do you understand by workability of concrete? Explain the factors which affect workability.

7M

b) Discuss the various factors which affect the compressive strength of concrete.

8M

4. a) What is the gel space ratio? Explain the factors affecting the gel formation. 7M b) Briefly explain the terms segregation and bleeding of concrete.

8M

Unit – III

5. a) Explain the importance of NDT. List the various methods employed in practice. 7M b) Discuss briefly the methods of measuring tensile and flexural strength of concrete.

8M

6. a) Distinguish between short term and long term modulus of elasticity of concrete and explain how the dynamic modulus of elasticity of concrete can be determined in laboratory.

10M

b) What is Shrinkage in concrete? Explain the different types of shrinkage.

5M

Unit – IV

7. a) Discuss the factors affecting the mix proportioning of concrete 7M b) Explain the significance of durability of concrete. Explain the factors which affect the

durability.

8M

8. Design the concrete mix for M30 grade of concrete by IS method. Data: Max. Nominal size of aggregate is 20mm. Minimum cement content is 300kg/m3. Max w/c ratio is 0.45. Workability required is 75mm Slump. Concrete needs to be pumped while placing degree of supervision is good. Type of aggregate used is sub-angular aggregate. Maximum cement content is 450kg/m3. Both mineral and chemical admixtures are to be used. Chemical admixture is super plasticizer. The specific gravity of cement is 3.15 and that of coarse aggregate is 2.72 and that of fine aggregate is 2.68. Specific gravity of fly-ash is 2.1 and that of super plasticizer is 1.08. Fine aggregate conform to zone-III. Water absorption of coarse aggregate is 0.5% and that of fine aggregate is 1.0%.

15M

Cont…2

:: 2 ::

Unit – V

9. What are the characters of SCC? Explain also list out the fresh properties of SCC and the tests to determine the same along with the acceptable values as per EFNARC guidelines.

15M

10. a) What is LWC? Discuss the properties of LWC. 8M b) What is the FRC? What are its applications? 7M


A1109

(AUTONOMOUS)


HYDRAULICS AND HYDRAULIC MACHINES (Civil Engineering)




Unit – I

1. a) State Buckingham’s π-theorem. Explain the dimensional analysis procedure using the Buckingham’s π-theorem.

7M

b) The drag force FD on a sphere in laminar flow is known to be depend on its diameter D, velocity of flow V, density of fluid ρ and coefficient of viscosity μ. Obtain an expression for FD using Raleigh’s method.

8M

2. a) Define dimensionless number. Explain the dimensionless numbers relevant to fluid flow analysis.

7M

b) A 1:50 spillway model has a discharge of 1.25m3/s. What is the corresponding prototype discharge? If a flood phenomenon takes place 12hours to occur in the prototype, how long should it take in the model?

8M

Unit – II

3. a) Obtain an expression for the force exerted by a jet of water on an inclined fixed flat plate in the direction of the jet.

7M

b) A jet of water of 75mm diameter having velocity of 20m/s strikes a series of the flat plates arranged around the periphery of a wheel such that each plate appears successively before the jet. If the plates are moving at a velocity of 5m/s, compute the force exerted by the jet on the plate, the work done per second on the plate and efficiency of the jet.

8M

4. a) Obtain an expression for the force exerted by a jet of water on flat vertical plate moving in the direction of the jet.

7M

b) A jet of water of 7.5cm diameter having velocity of 20m/s strikes normally a flat smooth plate. Determine the thrust on the plate: i. If the plate is at rest ii. If the plate is moving in the same direction as the jet with a velocity of 5m/s. Also find the work done per second on the plate in each case and the efficiency of the jet when the plate is moving.

8M

Unit – III

5. a) Prove that for the trapezoidal channel of most economical section: i. Half of top width = Length of one of the sloping sides ii. Hydraulic mean depth = ½ depth of flow

8M

b) A trapezoidal channel has side slopes of 1 horizontal to 2 vertical and the slope of the bed is 1 in 1500. The area of the section is 40m2. Find the dimensions of the section if it is most economical. Determine the discharge of the most economical section if C=50.

7M

Cont…2

::2::

6. a) Define the following:

i. Uniform flow ii. Non-uniform flow iii. Rapidly varied flow iv. Gradually varied flow

8M

b) The depth of flow of water, at a certain section of a rectangular channel of 2m wide, is 0.3m. The discharge through the channel is 1.5m3/s. Determine whether a hydraulic jump will occur, and if so, find its height and loss of energy per kg of water. Also determine the power lost in the hydraulic jump.

7M

Unit – IV

7. a) Explain classification of turbines based on: i. Type of energy at inlet ii. Flow direction iii. Specific speed iv. Head at inlet

8M

b) A Pelton wheel has to be designed for the following data. Power to be developed=6000 kW, net head available=300m, speed=550 rpm, ratio of jet diameter to wheel diameter= 1/10 and overall efficiency=85%. Determine: i. Number of jets required ii. Diameter of the jet iii. Diameter of the wheel iv. The quantity of water required Assume flow ratio =0.98 and speed ratio =0.46.

7M

8. a) Explain what is meant by unit quantities in turbines. Derive expressions for unit speed, unit discharge and unit power of a turbine.

8M

b) A Francis turbine working under a head of 5m at a speed of 210rpm, develops 75kW when the rate of flow of water is 1.8m3/sec. The runner diameter is 1m: i. Determine the specific speed of the turbine ii. If the head on this turbine is increased to 16m, determine its new speed,

discharge and power

7M

Unit – V

9. a) Derive an expression for the minimum speed for starting a centrifugal pump. 7M b) The diameter of an impeller of a centrifugal pump at inlet and outlet are 30cm and

60cm respectively. Determine the minimum starting speed of the pump if it works against a head of 30m.

8M

10. a) Define cavitation. What are the effects of cavitation. Give the necessary precautions against cavitation.

7M

b) A centrifugal pump is to discharge 0.118m3/s at a speed of 1450r.p.m. against a head of 25m. The impeller diameter is 250mm, its width at outlet is 50mm and manometric efficiency is 75%. Determine the vane angle at the outer periphery of the impeller.

8M

Hall TicketNo: Question Paper Code : A1109

(AUTONOMOUS)


HYDRAULICS AND HYDRAULIC MACHINES (Civil Engineering)




Unit – I

1. a) State Buckingham’s π-theorem. Explain the dimensional analysis procedure using the Buckingham’s π-theorem.

7M

b) The drag force FD on a sphere in laminar flow is known to be depend on its diameter D, velocity of flow V, density of fluid ρ and coefficient of viscosity μ. Obtain an expression for FD using Raleigh’s method.

8M

2. a) Define dimensionless number. Explain the dimensionless numbers relevant to fluid flow analysis.

7M

b) A 1:50 spillway model has a discharge of 1.25m3/s. What is the corresponding prototype discharge? If a flood phenomenon takes place 12hours to occur in the prototype, how long should it take in the model?

8M

Unit – II

3. a) Obtain an expression for the force exerted by a jet of water on an inclined fixed flat plate in the direction of the jet.

7M

b) A jet of water of 75mm diameter having velocity of 20m/s strikes a series of the flat plates arranged around the periphery of a wheel such that each plate appears successively before the jet. If the plates are moving at a velocity of 5m/s, compute the force exerted by the jet on the plate, the work done per second on the plate and efficiency of the jet.

8M

4. a) Obtain an expression for the force exerted by a jet of water on flat vertical plate moving in the direction of the jet.

7M

b) A jet of water of 7.5cm diameter having velocity of 20m/s strikes normally a flat smooth plate. Determine the thrust on the plate: iii. If the plate is at rest iv. If the plate is moving in the same direction as the jet with a velocity of 5m/s. Also find the work done per second on the plate in each case and the efficiency of the jet when the plate is moving.

8M

Unit – III

5. a) Prove that for the trapezoidal channel of most economical section: iii. Half of top width = Length of one of the sloping sides iv. Hydraulic mean depth = ½ depth of flow

8M

b) A trapezoidal channel has side slopes of 1 horizontal to 2 vertical and the slope of the bed is 1 in 1500. The area of the section is 40m2. Find the dimensions of the section if it is most economical. Determine the discharge of the most economical section if C=50.

7M

Cont…2

::2::

6. a) Define the following: v. Uniform flow vi. Non-uniform flow vii. Rapidly varied flow viii. Gradually varied flow

8M

b) The depth of flow of water, at a certain section of a rectangular channel of 2m wide, is 0.3m. The discharge through the channel is 1.5m3/s. Determine whether a hydraulic jump will occur, and if so, find its height and loss of energy per kg of water. Also determine the power lost in the hydraulic jump.

7M

Unit – IV

7. a) Explain classification of turbines based on: v. Type of energy at inlet vi. Flow direction vii. Specific speed viii. Head at inlet

8M

b) A Pelton wheel has to be designed for the following data. Power to be developed=6000 kW, net head available=300m, speed=550 rpm, ratio of jet diameter to wheel diameter= 1/10 and overall efficiency=85%. Determine: v. Number of jets required vi. Diameter of the jet vii. Diameter of the wheel viii. The quantity of water required Assume flow ratio =0.98 and speed ratio =0.46.

7M

8. a) Explain what is meant by unit quantities in turbines. Derive expressions for unit speed, unit discharge and unit power of a turbine.

8M

b) A Francis turbine working under a head of 5m at a speed of 210rpm, develops 75kW when the rate of flow of water is 1.8m3/sec. The runner diameter is 1m: iii. Determine the specific speed of the turbine iv. If the head on this turbine is increased to 16m, determine its new speed,

discharge and power

7M

Unit – V

9. a) Derive an expression for the minimum speed for starting a centrifugal pump. 7M b) The diameter of an impeller of a centrifugal pump at inlet and outlet are 30cm and

60cm respectively. Determine the minimum starting speed of the pump if it works against a head of 30m.

8M

10. a) Define cavitation. What are the effects of cavitation. Give the necessary precautions against cavitation.

7M

b) A centrifugal pump is to discharge 0.118m3/s at a speed of 1450r.p.m. against a head of 25m. The impeller diameter is 250mm, its width at outlet is 50mm and manometric efficiency is 75%. Determine the vane angle at the outer periphery of the impeller.

8M


(AUTONOMOUS)


STRENGTH OF MATERIALS-II (Civil Engineering)




Unit – I

1. a) Explain briefly the theories of failure, the maximum principal strain theory. 7M b) At a point in a strained material, the principal stresses are 80MN/m2 and 40MN/m2

both tensile on two mutually perpendicular directions. Determine the normal, tangential and resultant stresses on a plane which makes an angle of 20o with the major principal stress.

8M

2. a) What are the theories of failure? Briefly explain maximum shear stress theory. 6M b) At a point in a material, the stresses on 2 mutually perpendicular planes are 50 N/mm2

(tensile) and 30N/mm2 (tensile). The shear stress across these planes is 12 N/mm2. Using Mohr’s circle, find magnitude and direction of the resultant stress on a plane of the first stress. Find also the normal and tangential stresses on this plane.

9M

Unit – II

3. a) List the assumptions made in the analysis of Euler’s theory of columns. 5M b) Determine the bucking load for the strut of ‘T’ section. The flange width being

100mm.Overall depth =80mm and both flanges and stem are of 10mm thick. The struts is 3meters long and is hinged at both ends. E=2x105N/mm2.

10M

4. a) Using Euler’s theory, derive an equation for the crippling load for long column one end fixed and the other end free.

6M

b) Find the maximum length of a steel rod of 50mm diameter used as a column with both ends fixed and carrying an load of 25kN.Factor of safety=3. α=1/7500, fc=320N/mm2 by using Rankine’s formula.

9M

Unit – III

5. The steel shaft of a socket wrench has a diameter of 8.0mm and a length of 200mm as shown in Fig.1. If the allowable stress in shear is 60MPa, what is the maximum permissible torque Tmax that may be exerted with the wrench? Through what angle θ (in degrees) will the shaft twist under the action of the maximum torque? (Assume G=78GPa and disregard any bending of the shaft.)

Fig.1

15M

6. A close coiled helical spring of 10cm mean diameter is made up of 1cm diameter rod has 20turns. The spring carries an axial load of 200N. Determine the shearing stress. Taking the value of modulus of rigidity=8.4X104N/mm2, determine the deflection when carrying this load. Also calculate the stiffness of the spring and the frequency of free vibration for a mass hanging from it.

15M

Cont…2

:: 2 ::

Unit – IV

7. A masonry dam of trapezoidal section 4m high, 1m wide at its top and 3m width at its bottom retains water on its vertical face. Determine the maximum and minimum stresses at the base when the reservoir is full. Take the weight density of masonry as 19.62kN/m3.

15M

8. a) Define the following terms: i. Section modulus ii. Moment of Resistance iii. Core of a section

6M

b) A short hollow pier of 1.2meter square section outside and 1.0meter square section inside is subjected a direct load of 120kN along its outside edge point. Determine the final stresses at the base of the pier.

9M

Unit – V

9. Determine the value of force ‘W’ which would produce a force of magnitude 150kN in the member AB of the cantilever truss shown in Fig2. Also determine the forces in the members EF and EA by the method of sections

Fig.2

15M

10. Evaluate the forces in the members of the truss shown in Fig.3 by the method of joints and indicate their nature.

Fig.3

15M


(AUTONOMOUS)


STRENGTH OF MATERIALS-II (Civil Engineering)




Unit – I

1. a) Explain briefly the theories of failure, the maximum principal strain theory. 7M b) At a point in a strained material, the principal stresses are 80MN/m2 and 40MN/m2 both

tensile on two mutually perpendicular directions. Determine the normal, tangential and resultant stresses on a plane which makes an angle of 20o with the major principal stress.

8M

2. a) What are the theories of failure? Briefly explain maximum shear stress theory. 6M b) At a point in a material, the stresses on 2 mutually perpendicular planes are 50 N/mm2

(tensile) and 30N/mm2 (tensile). The shear stress across these planes is 12 N/mm2. Using Mohr’s circle, find magnitude and direction of the resultant stress on a plane of the first stress. Find also the normal and tangential stresses on this plane.

9M

Unit – II

3. a) List the assumptions made in the analysis of Euler’s theory of columns. 5M b) Determine the bucking load for the strut of ‘T’ section. The flange width being

100mm.Overall depth =80mm and both flanges and stem are of 10mm thick. The struts is 3meters long and is hinged at both ends. E=2x105N/mm2.

10M

4. a) Using Euler’s theory, derive an equation for the crippling load for long column one end fixed and the other end free.

6M

b) Find the maximum length of a steel rod of 50mm diameter used as a column with both ends fixed and carrying an load of 25kN.Factor of safety=3. α=1/7500, fc=320N/mm2 by using Rankine’s formula.

9M

Unit – III

5. The steel shaft of a socket wrench has a diameter of 8.0mm and a length of 200mm as shown in Fig.1. If the allowable stress in shear is 60MPa, what is the maximum permissible torque Tmax that may be exerted with the wrench? Through what angle θ (in degrees) will the shaft twist under the action of the maximum torque? (Assume G=78GPa and disregard any bending of the shaft.)

Fig.1

15M

6. A close coiled helical spring of 10cm mean diameter is made up of 1cm diameter rod has 20turns. The spring carries an axial load of 200N. Determine the shearing stress. Taking the value of modulus of rigidity=8.4X104N/mm2, determine the deflection when carrying this load. Also calculate the stiffness of the spring and the frequency of free vibration for a mass hanging from it.

15M

Cont…2

:: 2 ::

Unit – IV

7. A masonry dam of trapezoidal section 4m high, 1m wide at its top and 3m width at its bottom retains water on its vertical face. Determine the maximum and minimum stresses at the base when the reservoir is full. Take the weight density of masonry as 19.62kN/m3.

15M

8. a) Define the following terms: i. Section modulus ii. Moment of Resistance iii. Core of a section

6M

b) A short hollow pier of 1.2meter square section outside and 1.0meter square section inside is subjected a direct load of 120kN along its outside edge point. Determine the final stresses at the base of the pier.

9M

Unit – V

9. Determine the value of force ‘W’ which would produce a force of magnitude 150kN in the member AB of the cantilever truss shown in Fig2. Also determine the forces in the members EF and EA by the method of sections

Fig.2

15M

10. Evaluate the forces in the members of the truss shown in Fig.3 by the method of joints and indicate their nature.

Fig.3

15M


(AUTONOMOUS)


STRUCTURAL ANALYSIS-I (Civil Engineering)




Unit – I

1. Analyze the propped cantilever loaded as shown in Fig.1. Draw BMD and SFD. Assume constant EI throughout the span.

Fig.1

15M


Fig.2

15M

Unit – II

3. Analyze a fixed beam of span 5m with udl of intensity 10kN/m as shown in Fig.3, for fixed end moments. Draw SFD, BMD and elastic curve.

Fig.3

15M

4. Analyze the given continuous beam using three moment theorem. Support C settles by 5mm. Take E=15kN/mm2 and I=5x109mm4. Draw SFD and BMD.

Fig.4

15M

Cont…2

:: 2 ::

Unit – III

5. A train of wheel loads as shown in Fig.5 crosses a simply supported beam of span 22.5m. Calculate the maximum negative shear and maximum positive shear force values at the centre of the span and also the absolute maximum bending moment anywhere in the span.

Fig.5

15M

6. Determine the vertical and horizontal deflection at point C in the frame shown in the Fig.6. Take E= 200 kN/mm2 and I = 30X106 mm4.

Fig.6

15M

Unit – IV

7. A uniformly distributed load of intensity 2kN/m and 5m long crosses a simply supported beam of 20m span from left to right as shown in figure 7. Calculate: i. Maximum shear force and maximum bending moment at a section 8m from the left ii. Support Absolute maximum bending moment

Fig.7

15M

8. Analyze the two span continuous beam shown in Fig.8 by slope deflection method and draw BMD.

Fig.8

15M

Cont…3

:: 3 ::

Unit – V

9. Calculate the vertical deflection components of joint B of the truss loaded as shown in Fig.9 by strain energy method. Cross- sectional area of each member is 500 x 10-6m2. E = 200 x 106 kN/m2

Fig.9

15M

10. a) Discuss Maxwell Betti theorem with the help of sketch. 5M b) i. Explain Strain energy and complimentary strain energy with sketch

ii. Explain Castigliano’s I and II theorems. 10M


A2109

(AUTONOMOUS)


STRUCTURAL ANALYSIS-I (Civil Engineering)




Unit – I


Fig.1

15M


Fig.2

15M

Unit – II

3. Analyze a fixed beam of span 5m with udl of intensity 10kN/m as shown in Fig.3, for fixed end moments. Draw SFD, BMD and elastic curve.

Fig.3

15M

4. Analyze the given continuous beam using three moment theorem. Support C settles by 5mm. Take E=15kN/mm2 and I=5x109mm4. Draw SFD and BMD.

Fig.4

15M

Cont…2

:: 2 ::

Unit – III

5. A train of wheel loads as shown in Fig.5 crosses a simply supported beam of span 22.5m. Calculate the maximum negative shear and maximum positive shear force values at the centre of the span and also the absolute maximum bending moment anywhere in the span.

Fig.5

15M

6. Determine the vertical and horizontal deflection at point C in the frame shown in the Fig.6. Take E= 200 kN/mm2 and I = 30X106 mm4.

Fig.6

15M

Unit – IV

7. A uniformly distributed load of intensity 2kN/m and 5m long crosses a simply supported beam of 20m span from left to right as shown in figure 7. Calculate: i. Maximum shear force and maximum bending moment at a section 8m from the left ii. Support Absolute maximum bending moment

Fig.7

15M

8. Analyze the two span continuous beam shown in Fig.8 by slope deflection method and draw BMD.

Fig.8

15M

Cont…3

:: 3 ::

Unit – V

9. Calculate the vertical deflection components of joint B of the truss loaded as shown in Fig.9 by strain energy method. Cross- sectional area of each member is 500 x 10-6m2. E = 200 x 106 kN/m2

Fig.9

15M

10. a) Discuss Maxwell Betti theorem with the help of sketch. 5M b) i. Explain Strain energy and complimentary strain energy with sketch

ii. Explain Castigliano’s I and II theorems. 10M




BUILDING PLANNING AND DRAWING

(Civil Engineering)



Unit – I

1. a) Briefly discuss on the classification of buildings. 7M b) Discuss the builtup area limitations. What are its advantages?

8M

2. a) What are the general principles followed while preparing building byelaws? 7M b) Explain with suitable examples:

i. Floor area ratio ii. Floor space index

8M

Unit – II

3. List out the requirements of the components of a primary school building.

15M

4. Prepare a line diagram for primary health centre for the following requirements: i. Entrance lobby ii. Reception iii. Waiting hall iv. OPD rooms v. Minor OT vi. Nurse room vii. Doctor’s room viii. Toilet block ix. Dressing room

15M

Unit – III

5. a) Explain briefly PERT and also give three estimates used in PERT. 7M b) What are the objectives of project planning?

8M

6. a) Give the advantages of construction scheduling. 7M b) Briefly explain about free float and total float along with example.

8M

Unit – IV

7. With neat sketch explain the salient features of a fully paneled teak wood door.

15M

8. With neat sketch describe the king post roof truss.

15M

Cont…2

:: 2 ::

Unit – V

9. From the line diagram shown in Fig-1 draw to a suitable scale the plan and elevation of the building

Fig-1

15M

10. From the line diagram shown in Fig-2, draw to a suitable scale the plan and section of the building showing all details.

Fig-2

15M

Hall TicketNo: Question Paper Code: A2111



BUILDING PLANNING AND DRAWING

(Civil Engineering)



Unit – I

1. a) Briefly discuss on the classification of buildings. 7M b) Discuss the builtup area limitations. What are its advantages?

8M

2. a) What are the general principles followed while preparing building byelaws? 7M b) Explain with suitable examples:

iii. Floor area ratio iv. Floor space index

8M

Unit – II

3. List out the requirements of the components of a primary school building.

15M

4. Prepare a line diagram for primary health centre for the following requirements: x. Entrance lobby xi. Reception xii. Waiting hall xiii. OPD rooms xiv. Minor OT xv. Nurse room xvi. Doctor’s room xvii. Toilet block xviii. Dressing room

15M

Unit – III

5. a) With a neat sketch explain one and a half brick thick wall junction of a corner in English bond.

8M

b) Differentiate between English and Flemish bond.

7M

6. a) Draw the English and Flemish bond. 8M b) Draw the sign convention of stone, concrete, glass, brick, plaster, timber and earth.

7M

Unit – IV

7. With neat sketch explain the salient features of a fully paneled teak wood door.

15M

8. With neat sketch describe the king post roof truss.

15M

Cont…2

:: 2 ::

Unit – V

9. From the line diagram shown in Fig-1 draw to a suitable scale the plan and elevation of the building

Fig-1

15M

10. From the line diagram shown in Fig-2, draw to a suitable scale the plan and section of the building showing all details.

Fig-2

15M




SURVEYING-II

(Civil Engineering)



Unit – I

1. a) What is local attraction? How it is detected and eliminated? 7M b) The following are the bearings taken in a closed compass traverse. Compute the interior

angles and correct them for observational errors.

Side Fore- bearing Back-bearing

AB 80° 10’ 259° 00’

BC 120° 20’ 301° 50’

CD 170° 50’ 350° 50’

DE 230° 10’ 49° 30’

EA 310° 20’ 130°15’

8M

2. a) What are the basic parts of a prismatic compass? Explain the function of each part. 7M b) Convert the following whole circle bearings to quadrantal bearings.

i. 56o20’ ii. 170o 05’ iii. 218o30’ iv. 272o 50’

8M

Unit – II

3. a) What are the advantages and disadvantages of a Plane table survey? 7M b) Explain the different methods of Plane table surveying with neat sketches.

8M

4. a) Explain the following: i. Orientation of Plane Table ii. Errors in Plane table survey iii. Setting of a Plane table on a station

9M

b) Explain the instruments with a neat sketch– Plumbing fork, Trough compass and Alidade.

6M

Unit – III

5. a) Answer the following: i. Advantages and disadvantages of Anallactic lens ii. Advantages of Tachometric surveying

6M

b) Derive an equation for the horizontal distance D and elevation V when the staff is held Vertical in tachometric survey.

9M

6. a) Derive an equation for calculating Distance and elevation of staff station by tangential method, when both angles are in Depression.

7M

b) Determine the distance between the instrument station P and staff station Q , and RL of station Q from the following data: K=100, C=0.00, staff readings=0.645, 0.995,1.350, Height of the instrument=1.490m, RL of the PC=200.410, Vertical angle = (4:30’).

8M

Cont…2

::2::

Unit – IV

7. a) What is meant by a total station? List out its advantages. 7M b) List out the different segments in GPS. Explain space segment.

8M

8. a) Explain the principle of GPS as described by US department of Defense. 7M b) Compare the features of a total station with other conventional survey

instruments.

8M

Unit – V

9. a) Explain setting out of curve by successive bisection of arcs or chords. 7M b) Determine the ordinates of the points on a circular curve having a long chord of

100m and a versed sine of 5m. The ordinates are to be measured from the long chord at an interval of 10m.

8M

10. Two tangents intersect at the chainage of 1190m, the deflection angle being 36o. Calculate all the data necessary for setting out a curve with a radius of 300m by deflection angle method. The peg interval is 30m.

15M




SURVEYING-II

(Civil Engineering)



Unit – I

1. a) List the methods of computation of areas of a tract with straight but irregular boundaries and explain them.

8M

b) Calculate the volume between the end sections by Trapezoidal rule and Prismoidal rule for the given sections shown in Fig.1. of an embankment at an interval of 30m.

Fig.1

7M

2. a) Briefly explain the procedure to determine the capacity of a reservoir from contour plan. 7M b) Compute the area between the base line, the curved line and the end offsets using

simpson’s rule and by trapezoidal rule, given the readings at 10mts interval, offset readings are 0.00, 2.68, 3.64, 3.70, 4.60, 3.62, 4.84, and 5.74 from base line to curved boundary.

8M

Unit – II

3. a) Describe in brief the temporary adjustments of a theodolite. 6M b) A Theodolite was set up in between two towers A and B. The distance between

theodolite station and the tower A is 60m and from B, 120m. Observations made to top of the towers A and B with the theodolite are +33:26’20” and +30:50’40” respectively. Given the RL of the Trunion axis as 139.675m, determine the difference in elevation between the towers A and B.

9M

4. a) How would you measure a horizontal angle by method of Reiteration method, explain with a sketch?

9M

b) Discuss about electronic digital theodolite.

6M

Unit – III

5. a) Answer the following: iii. Advantages and disadvantages of Anallactic lens iv. Advantages of Tachometric surveying

6M

b) Derive an equation for the horizontal distance D and elevation V when the staff is held Vertical in tachometric survey.

9M

6. a) Derive an equation for calculating Distance and elevation of staff station by tangential method, when both angles are in Depression.

7M

b) Determine the distance between the instrument station P and staff station Q , and RL of station Q from the following data: K=100, C=0.00, staff readings=0.645, 0.995,1.350, Height of the instrument=1.490m, RL of the PC=200.410, Vertical angle = (4:30’).

8M

Cont…2

::2::

Unit – IV

7. a) What is meant by a total station? List out its advantages. 7M b) List out the different segments in GPS. Explain space segment.

8M

8. a) Explain the principle of GPS as described by US department of Defense. 7M b) Compare the features of a total station with other conventional survey

instruments.

8M

Unit – V

9. a) Explain setting out of curve by successive bisection of arcs or chords. 7M b) Determine the ordinates of the points on a circular curve having a long chord of

100m and a versed sine of 5m. The ordinates are to be measured from the long chord at an interval of 10m.

8M

10. Two tangents intersect at the chainage of 1190m, the deflection angle being 36o. Calculate all the data necessary for setting out a curve with a radius of 300m by deflection angle method. The peg interval is 30m.

15M

Question Paper Code : A1509 (AUTONOMOUS) B. Tech IV ...b) Draw the block diagram to show how basic...

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Transcript of Question Paper Code : A1509 (AUTONOMOUS) B. Tech IV ...b) Draw the block diagram to show how basic...