SILVER OAK COLLEGE OF ENGINEERING...
Transcript of SILVER OAK COLLEGE OF ENGINEERING...
Enroll No _____________
SILVER OAK COLLEGE OF ENGINEERING amp TECHNOLOGY
ADITYA SILVER OAK INSTITUTE OF TECHNOLOGY
BE - SEMESTERndashVII bull MID SEMESTER-I EXAMINATION ndash WINTER 2018
SUBJECT COMPUTER AIDED MANUFACTURING (2171903) (ME)
DATE 13-08-2018 TIME 1000 am to 1130 am TOTAL MARKS 40
Instructions 1 All the questions are compulsory 2 Figures to the right indicate full marks 3 Assume suitable data if required
Q1 (a) Define CAM and objectives of CAM [03]
(b) Define GT amp explain with reference to GT Composite parts [03]
(c) Discuss each component of CNC system with suitable diagram [04]
Q2 (a) Discuss the concept of CIM wheel and explain the importance of integrating
the functions included therein
[06]
(b) Comparison of Process Layout Product Layout Group Technology [05]
(c) Explain major components of PLC with neat sketch [04]
OR
Q2 (a) Explain different types of manufacturing system with suitable application [06]
(b) Explain OPTIZ classification and coding system [05]
(c) Enlist Relay device components and give classification of switches with neat
sketch
[04]
Q3 (a) Compare NC and CNC machine [06]
(b) Draw a neat sketch of recirculating ball screw State its advantages [05]
(c) Distinguish between Variant and generative approach of CAPP [04]
OR
Q3 (a) Classify CNC system with suitable diagram [06]
(b) Explain types of encoders used in feedback system of CNC with neat sketch [05]
(c) List various benefits and limitations for implementation of GT in Industry [04]
Enroll No _____________
SILVER OAK COLLEGE OF ENGINEERING amp TECHNOLOGY
ADITYA SILVER OAK INSTITUTE OF TECHNOLOGY
BE - SEMESTERndashVII bull MID SEMESTER-I EXAMINATION ndash WINTER 2018
SUBJECT MACHINE DESIGN (2171909) (ME)
DATE 08-08-2018 TIME 1000 am to 1130 am TOTAL MARKS 40
Instructions 1 All the questions are compulsory 2 Figures to the right indicate full marks 3 Assume suitable data if required 4 Use of any Machine Design Data Book is restricted
Q1 (a) Why an I-section is usually preferred to round section in case of connecting rods [03]
(b) What is Interference and undercutting of gear Explain how it can be avoided [03]
(c) Explain the different modes of gear tooth failures and suggest possible causes
remedies to avoid such failures
[04]
Q2 (a) A diesel engine connecting rod with cylinder bore of 85 mm has
Connecting Rod Length = 350 mm
Maximum Gas pressure = 3 MPa
Factor of Safety against buckling failure = 5
(ld) ratio for piston pin bearing = 15
(ld) ratio for crank pin bearing = 125
Allowable bearing pressure for piston pin bearing = 13 MPa
Allowable bearing pressure for crank pin bearing = 11 MPa
Length of stroke = 140 mm
Mass of reciprocating parts = 15 kg
Engine speed = 2000 rpm
Thickness of bearing bush = 3mm
Yield strength of bolt material = 450 MPa
Factor of safety for bolt = 5
Calculate (a) Dimensions of cross section of connecting rod (b) Dimensions of small
and big end bearings (c) Nominal diameter of bolts for the cap
[10]
(b) Write a short note on types of gear materials and its selection [05]
OR
Q2 (a) A spur gear pair of 20 degree full depth involute tooth system has
Parameter Steel Pinion Steel Gear
Ultimate Tensile strength 700 MPa 600 MPa
BHN 240 225
Pitch circle diameter mm 48 144
Number of Teeth 24 72
Speed rpm 1440 480
Lewis form Factor Y = π [0154 ndash (0912z)] Velocity Factor = 3(3+v) Service
Factor=15 Factor of Safety=1 Wear Factor = 0156 (BHN100)2 MPa Specify the
power capacity (kW) of gear pair
[10]
(b) What are the merits and demerits of wet and dry cylinder liners Describe the
materials used for cylinder liners
[05]
Q3 (a) A pair of parallel helical gears with 23 degree helix angle has
Number of pinion = 24 teeth
Pinion Speed = 5000 rpm
Power transmitted = 25 kW
Speed Reduction = 41
Normal Pressure Angle = 20 degrees
Face Width = 10 times normal module
Gear amp Pinion Material (Sut = 750 MPa) = Hardened Steel
Service Factor = 15
Factor of Safety = 2
Velocity Factor = 56(56 + radicv)
Deformation Factor (C) = 11500 e (Nmm)
Grade 4 Error e = 320 + 025 (mn + 025 radicd)
(i) In the initial stages of gear design assume the pitch line velocity to be 10 msec
estimate the normal module
(ii) Select the first preference value of the normal module and calculate the main
dimensions of the gears
(iii) Determine the dynamic load using Buckinghamrsquos equation
(iv) Calculate the surface hardness (BHN) of the gear pair
[10]
(b) Draw a neat sketch of connecting rod and explain its constructional details [05]
OR
Q3 (a) State law of Gearing What is formative number of teeth on helical gear State
advantages of helical gears over spur gears
[05]
(b) Explain the design procedure of cylinder used in IC Engines which must include
the design of
(a) Bore and length of cylinder
(b) Thickness of cylinder wall
(c) Stresses in cylinder wall
(d) Cylinder Head
[10]
Enroll No _____________
SILVER OAK COLLEGE OF ENGINEERING amp TECHNOLOGY
BE - SEMESTERndashVII bull MID SEMESTER-I EXAMINATION ndash WINTER 2018
SUBJECT OIL HYDRAULIC amp PNEUMATIC (2171912) (ME)
DATE 11-08-2018 TIME 1000 am to 1130 am TOTAL MARKS 40
Instructions 1 All the questions are compulsory 2 Figures to the right indicate full marks 3 Assume suitable data if required
Q1 (a) Difference between Hydraulic amp Pneumatic [05]
(b) Draw the symbols for following hydraulic components according to ISO
1 Double acting cylinder with cushioning on both sides
2 Lever operated spring returned 32 DCV
3 FRL unit
4 Pressure relief valve
5 Gas Loaded Accumulator
[05]
Q2 (a) State and explain various properties of hydraulic fluid [06]
(b) Sketch amp Explain working of internal gear pump [05]
(c) Sketch and explain Bypass Filter [04]
OR
Q2 (a) With the help of sketch explain different locations of filters [06]
(b) Sketch and explain unbalanced vane pump [05]
(c) Advantages and disadvantages of High - Water Content Fluid (HWCF) [04]
Q3 (a) Explain memory circuit and speed control of the cylinder for pneumatic systems [06]
(b) Construction and working of time delay valve of pneumatic systems [05]
(c) Explain lubricator with sketch used in FRL unit [04]
OR
Q3 (a) Sketch and explain the six basic components used in a pneumatic system [06]
(b) Sketch amp explain shuttle valve construction amp its working [05]
(c) Draw and explain twin lobe compressor [04]
Enroll No _____________
SILVER OAK COLLEGE OF ENGINEERING amp TECHNOLOGY
ADITYA SILVER OAK INSTITUTE OF TECHNOLOGY
BE - SEMESTERndashVII bull MID SEMESTER-I EXAMINATION ndash WINTER 2018
SUBJECT OPERATIONAL RESEARCH (2171901) (ME)
DATE 06-08-2018 TIME1000 am to 1130 am TOTAL MARKS40
Instructions 1 All the questions are compulsory 2 Figures to the right indicate full marks 3 Assume suitable data if required
Q1 (a) Comment on the following statements
1) OR is the art of winning wars without actually fighting them
2) OR is the art of finding bad answers to situations where in otherwise worse
exist
3) OR replaces management by personality
[03]
(b) A firm produces an alloy having maximum specific gravity of 098 minimum
chromium content of 8 and minimum melting point of 450 C Raw materials A
B C have the properties as shown in the table below
Property Properties of raw material
A B C
Specific gravity 092 097 104
Chromium 7 13 16
Melting Point 713 K 763 K 753 K
Cost of various raw materials per ton are Rs 90- for A Rs 280- for B and Rs
40- for C Formulate the LPP where the cost of raw material is minimum
[03]
(c) Find the minimum value of Z= -x1 + 2x2 in first quadrant
Subject to ndashx1 + 3x2 le 10
x1 + x2 le 6
x1 ndash x2 le 2
[04]
Q2 (a) A 24 hour supermarket has the following minimal requirements for cashiers
Period
1 2 3 4 5 6
Time of the day (24 hr) 3-7 7-11 11-15 15-19 19-23 23-3
Minimum number required 7 20 14 20 10 5
Period 1 follows immediately after period 6 A cashier works eight consecutive
hours starting at the beginning of one of the six time periods Determine a daily
employee worksheet which satisfies the requirements with the least number of
personnel Formulate the problem as an LPP
[06]
(b) A company is currently involved in negotiations with its union on the upcoming
wage contract Positive signs in the table represent wage increase while negative
represents wage reduction What are the optimal strategies for the company as
well as the union What is the value of the game
[05]
C1 C2 C3 C4
U1 +025 +020 +014 +030
U2 +027 +016 +012 +014
U3 +035 +008 +015 +019
U4 -002 +008 +013 -000
(c) Solve the following pay off matrix for player A Find the optimal strategies and
value of the game
B1 B2 B3
A1 0 2 2
A2 3 -1 2
A3 4 4 -2
[04]
OR
Q2 (a) Three grades of coal A B amp C contain Phosphorus and ash as impurities In a
particular industrial process fuel upto 100 ton is required which should contain
ash not more than 3 and phosphorus not more than 003 It is desired to
maximize the profit while satisfying these conditions There is unlimited supply of
each grade The percentage of impurities and the profits of grades are given
below
Coal Phosphorus () Ash () Profits (Rston)
A 002 30 12
B 004 20 15
C 003 50 14
[06]
(b) In a well known childrenrsquos game each player says lsquostonersquo or lsquoscissorsrsquo or lsquopaperrsquo If
one says lsquostonersquo and the other lsquoscissorsrsquo then the former wins a rupee Similarly
lsquoscissorsrsquo beat lsquopaperrsquo and lsquopaperrsquo beat lsquostonesrsquo ie the player calling the former
word wins a rupee The the two players name the same item then there is a tie
there is no payoff Write down the payoff matrix find the value of the game and
hence write down the optimal strategies for both the players
[05]
(c) A and B play a game in which each has three coins Rs 1 Rs 2 Rs5 Each
player selects a coin without the knowledge of others choice If the sum of the
coins is even then A wins coin of B otherwise B wins coin A Find out the best
strategy for each player and the value of the game
[04]
Q3 (a) Solve the following problem using transportation method Find the optimum
cost
From To Supply
1 2 3 4 5
1 80 69 103 64 61 12
2 47 100 72 65 40 16
3 16 103 87 36 94 20
[06]
4 86 15 57 19 25 8
5 27 20 72 94 19 8
Demand 16 14 18 6 10
(b) Four machines M1 M2 M3 M4 are to be installed in a machine shop at 5 vacant
places A B C D and E Because of limited space M2 cannot be placed at C and
M3 cannot be placed at A The assignment cost of the machine is as below Find
optimal assignment schedule
A B C D E
M1 4 6 10 5 6
M2 7 4 - 5 4
M3 - 6 9 6 2
M4 9 3 7 2 3
[05]
(c) Calculate the transportation cost using North-west corner rule Least cost method
and VAM where cell entries are unit costs
D1 D2 D3 D4 D5 Available
O1 68 35 4 74 15 18
O2 57 88 91 3 8 17
O3 91 60 75 45 60 19
O4 52 53 24 7 82 13
O5 51 18 82 13 7 15
Required 16 18 20 14 14 8282
[04]
OR
Q3 (a) Determine the optimum solution to the problem given below Obtain the initial
solution by VAM
M1 M2 M3 M4 Supply
P1 6 4 9 1 40
P2 20 6 11 3 40
P3 7 1 0 14 50
P4 7 1 12 6 90
Demand 90 30 50 30
[06]
(b) A solicitors firm employs typist on hourly price-rate basis for daily work There
are five typist available with hourly charges and speed mentioned in matrix
below
Typist A B C D E
Rate per hr 5 6 3 4 4
No of pages
typedhour
12 14 8 10 11
There are five jobs available to the firm and it wishes to allocate one job to one
typist only The typist is paid for full hour even if he works for fraction of an
hour The details of the job are given in matrix below
[05]
Job P Q R S T
No of pages 199 175 145 298 178
Find the least cost allocation for the firm using assignment model
(c) Consider the following transportation table The costs are given in rupees the
supply and demand are in units Determine the optimum solution
Destination
Source
1 2 3 4 5 Supply
I 40 36 26 38 30 160
II 38 28 34 34 198 280
III 36 38 24 28 30 240
Demand 160 160 200 120 240 680
880
[04]
Enroll No _____________
SILVER OAK COLLEGE OF ENGINEERING amp TECHNOLOGY
ADITYA SILVER OAK COLLEGE OF ENGINEERING amp TECHNOLOGY
BE - SEMESTERndashVII bull MID SEMESTER-I EXAMINATION ndash WINTER 2018
SUBJECT POWER PLANT ENGINEERING (2171910) (ME)
DATE 10-08-2018 TIME 1000 am to 1130 am TOTAL MARKS40
Instructions 1 All the questions are compulsory 2 Figures to the right indicate full marks 3 Assume suitable data if required
Q1 (a) Draw general layout of Modern Thermal Power plant [05]
(b) Write short note on nuclear fission and fusion [05]
Q2 (a) A gas turbine installation works on Brayton cycle between the temperature
limits of 35 oC and 715 oC For the maximum work to be developed calculate
temperature at the end of compression pressure ratio and thermal efficiency
[06]
(b) Explain pneumatic ash handling system [05]
(c) Give difference between Open cycle and Closed cycle gas turbine [04]
OR
Q2 (a) The air enters the compressor of an open cycle constant pressure gas turbine at
a pressure of 1 bar and temperature 20 oC The temperature of the air after
compression is 4 bar the isentropic efficiency of compressor and turbine are
80 and 85 respectively The air fuel ratio used as 901 of the flow rate of air
is 3kgsec Find
(1) Power developed
(2) Thermal efficiency of the cycle
Assume Cp=1 kJkgK and γ = 14 for air amp gas and CV of fuel= 41800 kJkg
[06]
(b) Draw a neat sketch of CANDU reactor and explain its working [05]
(c) Enlist the effect of operating variables on thermal efficiency of the gas turbine
cycle Explain any two in detail
[04]
Q3 (a) Explain combined steam and gas turbine cycle with schematic and T-S
diagram
[06]
(b) Explain the working of electrostatic precipitator [05]
(c) Explain the factors affecting selection of Power plant site [04]
OR
Q3 (a) Draw the diagram of nuclear reactor amp explain the function of each part [06]
(b) Discuss cyclone burner used for pulverized fuel with neat sketch [05]
(c) Explain ideal Brayton cycle with p-v and T-S diagram [04]
Enroll No _____________
SILVER OAK COLLEGE OF ENGINEERING amp TECHNOLOGY
ADITYA SILVER OAK INSTITUTE OF TECHNOLOGY
BE - SEMESTERndashVII bull MID SEMESTER-I EXAMINATION ndash WINTER 2018
SUBJECT MACHINE DESIGN (2171909) (ME)
DATE 08-08-2018 TIME 1000 am to 1130 am TOTAL MARKS 40
Instructions 1 All the questions are compulsory 2 Figures to the right indicate full marks 3 Assume suitable data if required 4 Use of any Machine Design Data Book is restricted
Q1 (a) Why an I-section is usually preferred to round section in case of connecting rods [03]
(b) What is Interference and undercutting of gear Explain how it can be avoided [03]
(c) Explain the different modes of gear tooth failures and suggest possible causes
remedies to avoid such failures
[04]
Q2 (a) A diesel engine connecting rod with cylinder bore of 85 mm has
Connecting Rod Length = 350 mm
Maximum Gas pressure = 3 MPa
Factor of Safety against buckling failure = 5
(ld) ratio for piston pin bearing = 15
(ld) ratio for crank pin bearing = 125
Allowable bearing pressure for piston pin bearing = 13 MPa
Allowable bearing pressure for crank pin bearing = 11 MPa
Length of stroke = 140 mm
Mass of reciprocating parts = 15 kg
Engine speed = 2000 rpm
Thickness of bearing bush = 3mm
Yield strength of bolt material = 450 MPa
Factor of safety for bolt = 5
Calculate (a) Dimensions of cross section of connecting rod (b) Dimensions of small
and big end bearings (c) Nominal diameter of bolts for the cap
[10]
(b) Write a short note on types of gear materials and its selection [05]
OR
Q2 (a) A spur gear pair of 20 degree full depth involute tooth system has
Parameter Steel Pinion Steel Gear
Ultimate Tensile strength 700 MPa 600 MPa
BHN 240 225
Pitch circle diameter mm 48 144
Number of Teeth 24 72
Speed rpm 1440 480
Lewis form Factor Y = π [0154 ndash (0912z)] Velocity Factor = 3(3+v) Service
Factor=15 Factor of Safety=1 Wear Factor = 0156 (BHN100)2 MPa Specify the
power capacity (kW) of gear pair
[10]
(b) What are the merits and demerits of wet and dry cylinder liners Describe the
materials used for cylinder liners
[05]
Q3 (a) A pair of parallel helical gears with 23 degree helix angle has
Number of pinion = 24 teeth
Pinion Speed = 5000 rpm
Power transmitted = 25 kW
Speed Reduction = 41
Normal Pressure Angle = 20 degrees
Face Width = 10 times normal module
Gear amp Pinion Material (Sut = 750 MPa) = Hardened Steel
Service Factor = 15
Factor of Safety = 2
Velocity Factor = 56(56 + radicv)
Deformation Factor (C) = 11500 e (Nmm)
Grade 4 Error e = 320 + 025 (mn + 025 radicd)
(i) In the initial stages of gear design assume the pitch line velocity to be 10 msec
estimate the normal module
(ii) Select the first preference value of the normal module and calculate the main
dimensions of the gears
(iii) Determine the dynamic load using Buckinghamrsquos equation
(iv) Calculate the surface hardness (BHN) of the gear pair
[10]
(b) Draw a neat sketch of connecting rod and explain its constructional details [05]
OR
Q3 (a) State law of Gearing What is formative number of teeth on helical gear State
advantages of helical gears over spur gears
[05]
(b) Explain the design procedure of cylinder used in IC Engines which must include
the design of
(a) Bore and length of cylinder
(b) Thickness of cylinder wall
(c) Stresses in cylinder wall
(d) Cylinder Head
[10]
Enroll No _____________
SILVER OAK COLLEGE OF ENGINEERING amp TECHNOLOGY
BE - SEMESTERndashVII bull MID SEMESTER-I EXAMINATION ndash WINTER 2018
SUBJECT OIL HYDRAULIC amp PNEUMATIC (2171912) (ME)
DATE 11-08-2018 TIME 1000 am to 1130 am TOTAL MARKS 40
Instructions 1 All the questions are compulsory 2 Figures to the right indicate full marks 3 Assume suitable data if required
Q1 (a) Difference between Hydraulic amp Pneumatic [05]
(b) Draw the symbols for following hydraulic components according to ISO
1 Double acting cylinder with cushioning on both sides
2 Lever operated spring returned 32 DCV
3 FRL unit
4 Pressure relief valve
5 Gas Loaded Accumulator
[05]
Q2 (a) State and explain various properties of hydraulic fluid [06]
(b) Sketch amp Explain working of internal gear pump [05]
(c) Sketch and explain Bypass Filter [04]
OR
Q2 (a) With the help of sketch explain different locations of filters [06]
(b) Sketch and explain unbalanced vane pump [05]
(c) Advantages and disadvantages of High - Water Content Fluid (HWCF) [04]
Q3 (a) Explain memory circuit and speed control of the cylinder for pneumatic systems [06]
(b) Construction and working of time delay valve of pneumatic systems [05]
(c) Explain lubricator with sketch used in FRL unit [04]
OR
Q3 (a) Sketch and explain the six basic components used in a pneumatic system [06]
(b) Sketch amp explain shuttle valve construction amp its working [05]
(c) Draw and explain twin lobe compressor [04]
Enroll No _____________
SILVER OAK COLLEGE OF ENGINEERING amp TECHNOLOGY
ADITYA SILVER OAK INSTITUTE OF TECHNOLOGY
BE - SEMESTERndashVII bull MID SEMESTER-I EXAMINATION ndash WINTER 2018
SUBJECT OPERATIONAL RESEARCH (2171901) (ME)
DATE 06-08-2018 TIME1000 am to 1130 am TOTAL MARKS40
Instructions 1 All the questions are compulsory 2 Figures to the right indicate full marks 3 Assume suitable data if required
Q1 (a) Comment on the following statements
1) OR is the art of winning wars without actually fighting them
2) OR is the art of finding bad answers to situations where in otherwise worse
exist
3) OR replaces management by personality
[03]
(b) A firm produces an alloy having maximum specific gravity of 098 minimum
chromium content of 8 and minimum melting point of 450 C Raw materials A
B C have the properties as shown in the table below
Property Properties of raw material
A B C
Specific gravity 092 097 104
Chromium 7 13 16
Melting Point 713 K 763 K 753 K
Cost of various raw materials per ton are Rs 90- for A Rs 280- for B and Rs
40- for C Formulate the LPP where the cost of raw material is minimum
[03]
(c) Find the minimum value of Z= -x1 + 2x2 in first quadrant
Subject to ndashx1 + 3x2 le 10
x1 + x2 le 6
x1 ndash x2 le 2
[04]
Q2 (a) A 24 hour supermarket has the following minimal requirements for cashiers
Period
1 2 3 4 5 6
Time of the day (24 hr) 3-7 7-11 11-15 15-19 19-23 23-3
Minimum number required 7 20 14 20 10 5
Period 1 follows immediately after period 6 A cashier works eight consecutive
hours starting at the beginning of one of the six time periods Determine a daily
employee worksheet which satisfies the requirements with the least number of
personnel Formulate the problem as an LPP
[06]
(b) A company is currently involved in negotiations with its union on the upcoming
wage contract Positive signs in the table represent wage increase while negative
represents wage reduction What are the optimal strategies for the company as
well as the union What is the value of the game
[05]
C1 C2 C3 C4
U1 +025 +020 +014 +030
U2 +027 +016 +012 +014
U3 +035 +008 +015 +019
U4 -002 +008 +013 -000
(c) Solve the following pay off matrix for player A Find the optimal strategies and
value of the game
B1 B2 B3
A1 0 2 2
A2 3 -1 2
A3 4 4 -2
[04]
OR
Q2 (a) Three grades of coal A B amp C contain Phosphorus and ash as impurities In a
particular industrial process fuel upto 100 ton is required which should contain
ash not more than 3 and phosphorus not more than 003 It is desired to
maximize the profit while satisfying these conditions There is unlimited supply of
each grade The percentage of impurities and the profits of grades are given
below
Coal Phosphorus () Ash () Profits (Rston)
A 002 30 12
B 004 20 15
C 003 50 14
[06]
(b) In a well known childrenrsquos game each player says lsquostonersquo or lsquoscissorsrsquo or lsquopaperrsquo If
one says lsquostonersquo and the other lsquoscissorsrsquo then the former wins a rupee Similarly
lsquoscissorsrsquo beat lsquopaperrsquo and lsquopaperrsquo beat lsquostonesrsquo ie the player calling the former
word wins a rupee The the two players name the same item then there is a tie
there is no payoff Write down the payoff matrix find the value of the game and
hence write down the optimal strategies for both the players
[05]
(c) A and B play a game in which each has three coins Rs 1 Rs 2 Rs5 Each
player selects a coin without the knowledge of others choice If the sum of the
coins is even then A wins coin of B otherwise B wins coin A Find out the best
strategy for each player and the value of the game
[04]
Q3 (a) Solve the following problem using transportation method Find the optimum
cost
From To Supply
1 2 3 4 5
1 80 69 103 64 61 12
2 47 100 72 65 40 16
3 16 103 87 36 94 20
[06]
4 86 15 57 19 25 8
5 27 20 72 94 19 8
Demand 16 14 18 6 10
(b) Four machines M1 M2 M3 M4 are to be installed in a machine shop at 5 vacant
places A B C D and E Because of limited space M2 cannot be placed at C and
M3 cannot be placed at A The assignment cost of the machine is as below Find
optimal assignment schedule
A B C D E
M1 4 6 10 5 6
M2 7 4 - 5 4
M3 - 6 9 6 2
M4 9 3 7 2 3
[05]
(c) Calculate the transportation cost using North-west corner rule Least cost method
and VAM where cell entries are unit costs
D1 D2 D3 D4 D5 Available
O1 68 35 4 74 15 18
O2 57 88 91 3 8 17
O3 91 60 75 45 60 19
O4 52 53 24 7 82 13
O5 51 18 82 13 7 15
Required 16 18 20 14 14 8282
[04]
OR
Q3 (a) Determine the optimum solution to the problem given below Obtain the initial
solution by VAM
M1 M2 M3 M4 Supply
P1 6 4 9 1 40
P2 20 6 11 3 40
P3 7 1 0 14 50
P4 7 1 12 6 90
Demand 90 30 50 30
[06]
(b) A solicitors firm employs typist on hourly price-rate basis for daily work There
are five typist available with hourly charges and speed mentioned in matrix
below
Typist A B C D E
Rate per hr 5 6 3 4 4
No of pages
typedhour
12 14 8 10 11
There are five jobs available to the firm and it wishes to allocate one job to one
typist only The typist is paid for full hour even if he works for fraction of an
hour The details of the job are given in matrix below
[05]
Job P Q R S T
No of pages 199 175 145 298 178
Find the least cost allocation for the firm using assignment model
(c) Consider the following transportation table The costs are given in rupees the
supply and demand are in units Determine the optimum solution
Destination
Source
1 2 3 4 5 Supply
I 40 36 26 38 30 160
II 38 28 34 34 198 280
III 36 38 24 28 30 240
Demand 160 160 200 120 240 680
880
[04]
Enroll No _____________
SILVER OAK COLLEGE OF ENGINEERING amp TECHNOLOGY
ADITYA SILVER OAK COLLEGE OF ENGINEERING amp TECHNOLOGY
BE - SEMESTERndashVII bull MID SEMESTER-I EXAMINATION ndash WINTER 2018
SUBJECT POWER PLANT ENGINEERING (2171910) (ME)
DATE 10-08-2018 TIME 1000 am to 1130 am TOTAL MARKS40
Instructions 1 All the questions are compulsory 2 Figures to the right indicate full marks 3 Assume suitable data if required
Q1 (a) Draw general layout of Modern Thermal Power plant [05]
(b) Write short note on nuclear fission and fusion [05]
Q2 (a) A gas turbine installation works on Brayton cycle between the temperature
limits of 35 oC and 715 oC For the maximum work to be developed calculate
temperature at the end of compression pressure ratio and thermal efficiency
[06]
(b) Explain pneumatic ash handling system [05]
(c) Give difference between Open cycle and Closed cycle gas turbine [04]
OR
Q2 (a) The air enters the compressor of an open cycle constant pressure gas turbine at
a pressure of 1 bar and temperature 20 oC The temperature of the air after
compression is 4 bar the isentropic efficiency of compressor and turbine are
80 and 85 respectively The air fuel ratio used as 901 of the flow rate of air
is 3kgsec Find
(1) Power developed
(2) Thermal efficiency of the cycle
Assume Cp=1 kJkgK and γ = 14 for air amp gas and CV of fuel= 41800 kJkg
[06]
(b) Draw a neat sketch of CANDU reactor and explain its working [05]
(c) Enlist the effect of operating variables on thermal efficiency of the gas turbine
cycle Explain any two in detail
[04]
Q3 (a) Explain combined steam and gas turbine cycle with schematic and T-S
diagram
[06]
(b) Explain the working of electrostatic precipitator [05]
(c) Explain the factors affecting selection of Power plant site [04]
OR
Q3 (a) Draw the diagram of nuclear reactor amp explain the function of each part [06]
(b) Discuss cyclone burner used for pulverized fuel with neat sketch [05]
(c) Explain ideal Brayton cycle with p-v and T-S diagram [04]
Q3 (a) A pair of parallel helical gears with 23 degree helix angle has
Number of pinion = 24 teeth
Pinion Speed = 5000 rpm
Power transmitted = 25 kW
Speed Reduction = 41
Normal Pressure Angle = 20 degrees
Face Width = 10 times normal module
Gear amp Pinion Material (Sut = 750 MPa) = Hardened Steel
Service Factor = 15
Factor of Safety = 2
Velocity Factor = 56(56 + radicv)
Deformation Factor (C) = 11500 e (Nmm)
Grade 4 Error e = 320 + 025 (mn + 025 radicd)
(i) In the initial stages of gear design assume the pitch line velocity to be 10 msec
estimate the normal module
(ii) Select the first preference value of the normal module and calculate the main
dimensions of the gears
(iii) Determine the dynamic load using Buckinghamrsquos equation
(iv) Calculate the surface hardness (BHN) of the gear pair
[10]
(b) Draw a neat sketch of connecting rod and explain its constructional details [05]
OR
Q3 (a) State law of Gearing What is formative number of teeth on helical gear State
advantages of helical gears over spur gears
[05]
(b) Explain the design procedure of cylinder used in IC Engines which must include
the design of
(a) Bore and length of cylinder
(b) Thickness of cylinder wall
(c) Stresses in cylinder wall
(d) Cylinder Head
[10]
Enroll No _____________
SILVER OAK COLLEGE OF ENGINEERING amp TECHNOLOGY
BE - SEMESTERndashVII bull MID SEMESTER-I EXAMINATION ndash WINTER 2018
SUBJECT OIL HYDRAULIC amp PNEUMATIC (2171912) (ME)
DATE 11-08-2018 TIME 1000 am to 1130 am TOTAL MARKS 40
Instructions 1 All the questions are compulsory 2 Figures to the right indicate full marks 3 Assume suitable data if required
Q1 (a) Difference between Hydraulic amp Pneumatic [05]
(b) Draw the symbols for following hydraulic components according to ISO
1 Double acting cylinder with cushioning on both sides
2 Lever operated spring returned 32 DCV
3 FRL unit
4 Pressure relief valve
5 Gas Loaded Accumulator
[05]
Q2 (a) State and explain various properties of hydraulic fluid [06]
(b) Sketch amp Explain working of internal gear pump [05]
(c) Sketch and explain Bypass Filter [04]
OR
Q2 (a) With the help of sketch explain different locations of filters [06]
(b) Sketch and explain unbalanced vane pump [05]
(c) Advantages and disadvantages of High - Water Content Fluid (HWCF) [04]
Q3 (a) Explain memory circuit and speed control of the cylinder for pneumatic systems [06]
(b) Construction and working of time delay valve of pneumatic systems [05]
(c) Explain lubricator with sketch used in FRL unit [04]
OR
Q3 (a) Sketch and explain the six basic components used in a pneumatic system [06]
(b) Sketch amp explain shuttle valve construction amp its working [05]
(c) Draw and explain twin lobe compressor [04]
Enroll No _____________
SILVER OAK COLLEGE OF ENGINEERING amp TECHNOLOGY
ADITYA SILVER OAK INSTITUTE OF TECHNOLOGY
BE - SEMESTERndashVII bull MID SEMESTER-I EXAMINATION ndash WINTER 2018
SUBJECT OPERATIONAL RESEARCH (2171901) (ME)
DATE 06-08-2018 TIME1000 am to 1130 am TOTAL MARKS40
Instructions 1 All the questions are compulsory 2 Figures to the right indicate full marks 3 Assume suitable data if required
Q1 (a) Comment on the following statements
1) OR is the art of winning wars without actually fighting them
2) OR is the art of finding bad answers to situations where in otherwise worse
exist
3) OR replaces management by personality
[03]
(b) A firm produces an alloy having maximum specific gravity of 098 minimum
chromium content of 8 and minimum melting point of 450 C Raw materials A
B C have the properties as shown in the table below
Property Properties of raw material
A B C
Specific gravity 092 097 104
Chromium 7 13 16
Melting Point 713 K 763 K 753 K
Cost of various raw materials per ton are Rs 90- for A Rs 280- for B and Rs
40- for C Formulate the LPP where the cost of raw material is minimum
[03]
(c) Find the minimum value of Z= -x1 + 2x2 in first quadrant
Subject to ndashx1 + 3x2 le 10
x1 + x2 le 6
x1 ndash x2 le 2
[04]
Q2 (a) A 24 hour supermarket has the following minimal requirements for cashiers
Period
1 2 3 4 5 6
Time of the day (24 hr) 3-7 7-11 11-15 15-19 19-23 23-3
Minimum number required 7 20 14 20 10 5
Period 1 follows immediately after period 6 A cashier works eight consecutive
hours starting at the beginning of one of the six time periods Determine a daily
employee worksheet which satisfies the requirements with the least number of
personnel Formulate the problem as an LPP
[06]
(b) A company is currently involved in negotiations with its union on the upcoming
wage contract Positive signs in the table represent wage increase while negative
represents wage reduction What are the optimal strategies for the company as
well as the union What is the value of the game
[05]
C1 C2 C3 C4
U1 +025 +020 +014 +030
U2 +027 +016 +012 +014
U3 +035 +008 +015 +019
U4 -002 +008 +013 -000
(c) Solve the following pay off matrix for player A Find the optimal strategies and
value of the game
B1 B2 B3
A1 0 2 2
A2 3 -1 2
A3 4 4 -2
[04]
OR
Q2 (a) Three grades of coal A B amp C contain Phosphorus and ash as impurities In a
particular industrial process fuel upto 100 ton is required which should contain
ash not more than 3 and phosphorus not more than 003 It is desired to
maximize the profit while satisfying these conditions There is unlimited supply of
each grade The percentage of impurities and the profits of grades are given
below
Coal Phosphorus () Ash () Profits (Rston)
A 002 30 12
B 004 20 15
C 003 50 14
[06]
(b) In a well known childrenrsquos game each player says lsquostonersquo or lsquoscissorsrsquo or lsquopaperrsquo If
one says lsquostonersquo and the other lsquoscissorsrsquo then the former wins a rupee Similarly
lsquoscissorsrsquo beat lsquopaperrsquo and lsquopaperrsquo beat lsquostonesrsquo ie the player calling the former
word wins a rupee The the two players name the same item then there is a tie
there is no payoff Write down the payoff matrix find the value of the game and
hence write down the optimal strategies for both the players
[05]
(c) A and B play a game in which each has three coins Rs 1 Rs 2 Rs5 Each
player selects a coin without the knowledge of others choice If the sum of the
coins is even then A wins coin of B otherwise B wins coin A Find out the best
strategy for each player and the value of the game
[04]
Q3 (a) Solve the following problem using transportation method Find the optimum
cost
From To Supply
1 2 3 4 5
1 80 69 103 64 61 12
2 47 100 72 65 40 16
3 16 103 87 36 94 20
[06]
4 86 15 57 19 25 8
5 27 20 72 94 19 8
Demand 16 14 18 6 10
(b) Four machines M1 M2 M3 M4 are to be installed in a machine shop at 5 vacant
places A B C D and E Because of limited space M2 cannot be placed at C and
M3 cannot be placed at A The assignment cost of the machine is as below Find
optimal assignment schedule
A B C D E
M1 4 6 10 5 6
M2 7 4 - 5 4
M3 - 6 9 6 2
M4 9 3 7 2 3
[05]
(c) Calculate the transportation cost using North-west corner rule Least cost method
and VAM where cell entries are unit costs
D1 D2 D3 D4 D5 Available
O1 68 35 4 74 15 18
O2 57 88 91 3 8 17
O3 91 60 75 45 60 19
O4 52 53 24 7 82 13
O5 51 18 82 13 7 15
Required 16 18 20 14 14 8282
[04]
OR
Q3 (a) Determine the optimum solution to the problem given below Obtain the initial
solution by VAM
M1 M2 M3 M4 Supply
P1 6 4 9 1 40
P2 20 6 11 3 40
P3 7 1 0 14 50
P4 7 1 12 6 90
Demand 90 30 50 30
[06]
(b) A solicitors firm employs typist on hourly price-rate basis for daily work There
are five typist available with hourly charges and speed mentioned in matrix
below
Typist A B C D E
Rate per hr 5 6 3 4 4
No of pages
typedhour
12 14 8 10 11
There are five jobs available to the firm and it wishes to allocate one job to one
typist only The typist is paid for full hour even if he works for fraction of an
hour The details of the job are given in matrix below
[05]
Job P Q R S T
No of pages 199 175 145 298 178
Find the least cost allocation for the firm using assignment model
(c) Consider the following transportation table The costs are given in rupees the
supply and demand are in units Determine the optimum solution
Destination
Source
1 2 3 4 5 Supply
I 40 36 26 38 30 160
II 38 28 34 34 198 280
III 36 38 24 28 30 240
Demand 160 160 200 120 240 680
880
[04]
Enroll No _____________
SILVER OAK COLLEGE OF ENGINEERING amp TECHNOLOGY
ADITYA SILVER OAK COLLEGE OF ENGINEERING amp TECHNOLOGY
BE - SEMESTERndashVII bull MID SEMESTER-I EXAMINATION ndash WINTER 2018
SUBJECT POWER PLANT ENGINEERING (2171910) (ME)
DATE 10-08-2018 TIME 1000 am to 1130 am TOTAL MARKS40
Instructions 1 All the questions are compulsory 2 Figures to the right indicate full marks 3 Assume suitable data if required
Q1 (a) Draw general layout of Modern Thermal Power plant [05]
(b) Write short note on nuclear fission and fusion [05]
Q2 (a) A gas turbine installation works on Brayton cycle between the temperature
limits of 35 oC and 715 oC For the maximum work to be developed calculate
temperature at the end of compression pressure ratio and thermal efficiency
[06]
(b) Explain pneumatic ash handling system [05]
(c) Give difference between Open cycle and Closed cycle gas turbine [04]
OR
Q2 (a) The air enters the compressor of an open cycle constant pressure gas turbine at
a pressure of 1 bar and temperature 20 oC The temperature of the air after
compression is 4 bar the isentropic efficiency of compressor and turbine are
80 and 85 respectively The air fuel ratio used as 901 of the flow rate of air
is 3kgsec Find
(1) Power developed
(2) Thermal efficiency of the cycle
Assume Cp=1 kJkgK and γ = 14 for air amp gas and CV of fuel= 41800 kJkg
[06]
(b) Draw a neat sketch of CANDU reactor and explain its working [05]
(c) Enlist the effect of operating variables on thermal efficiency of the gas turbine
cycle Explain any two in detail
[04]
Q3 (a) Explain combined steam and gas turbine cycle with schematic and T-S
diagram
[06]
(b) Explain the working of electrostatic precipitator [05]
(c) Explain the factors affecting selection of Power plant site [04]
OR
Q3 (a) Draw the diagram of nuclear reactor amp explain the function of each part [06]
(b) Discuss cyclone burner used for pulverized fuel with neat sketch [05]
(c) Explain ideal Brayton cycle with p-v and T-S diagram [04]
Enroll No _____________
SILVER OAK COLLEGE OF ENGINEERING amp TECHNOLOGY
BE - SEMESTERndashVII bull MID SEMESTER-I EXAMINATION ndash WINTER 2018
SUBJECT OIL HYDRAULIC amp PNEUMATIC (2171912) (ME)
DATE 11-08-2018 TIME 1000 am to 1130 am TOTAL MARKS 40
Instructions 1 All the questions are compulsory 2 Figures to the right indicate full marks 3 Assume suitable data if required
Q1 (a) Difference between Hydraulic amp Pneumatic [05]
(b) Draw the symbols for following hydraulic components according to ISO
1 Double acting cylinder with cushioning on both sides
2 Lever operated spring returned 32 DCV
3 FRL unit
4 Pressure relief valve
5 Gas Loaded Accumulator
[05]
Q2 (a) State and explain various properties of hydraulic fluid [06]
(b) Sketch amp Explain working of internal gear pump [05]
(c) Sketch and explain Bypass Filter [04]
OR
Q2 (a) With the help of sketch explain different locations of filters [06]
(b) Sketch and explain unbalanced vane pump [05]
(c) Advantages and disadvantages of High - Water Content Fluid (HWCF) [04]
Q3 (a) Explain memory circuit and speed control of the cylinder for pneumatic systems [06]
(b) Construction and working of time delay valve of pneumatic systems [05]
(c) Explain lubricator with sketch used in FRL unit [04]
OR
Q3 (a) Sketch and explain the six basic components used in a pneumatic system [06]
(b) Sketch amp explain shuttle valve construction amp its working [05]
(c) Draw and explain twin lobe compressor [04]
Enroll No _____________
SILVER OAK COLLEGE OF ENGINEERING amp TECHNOLOGY
ADITYA SILVER OAK INSTITUTE OF TECHNOLOGY
BE - SEMESTERndashVII bull MID SEMESTER-I EXAMINATION ndash WINTER 2018
SUBJECT OPERATIONAL RESEARCH (2171901) (ME)
DATE 06-08-2018 TIME1000 am to 1130 am TOTAL MARKS40
Instructions 1 All the questions are compulsory 2 Figures to the right indicate full marks 3 Assume suitable data if required
Q1 (a) Comment on the following statements
1) OR is the art of winning wars without actually fighting them
2) OR is the art of finding bad answers to situations where in otherwise worse
exist
3) OR replaces management by personality
[03]
(b) A firm produces an alloy having maximum specific gravity of 098 minimum
chromium content of 8 and minimum melting point of 450 C Raw materials A
B C have the properties as shown in the table below
Property Properties of raw material
A B C
Specific gravity 092 097 104
Chromium 7 13 16
Melting Point 713 K 763 K 753 K
Cost of various raw materials per ton are Rs 90- for A Rs 280- for B and Rs
40- for C Formulate the LPP where the cost of raw material is minimum
[03]
(c) Find the minimum value of Z= -x1 + 2x2 in first quadrant
Subject to ndashx1 + 3x2 le 10
x1 + x2 le 6
x1 ndash x2 le 2
[04]
Q2 (a) A 24 hour supermarket has the following minimal requirements for cashiers
Period
1 2 3 4 5 6
Time of the day (24 hr) 3-7 7-11 11-15 15-19 19-23 23-3
Minimum number required 7 20 14 20 10 5
Period 1 follows immediately after period 6 A cashier works eight consecutive
hours starting at the beginning of one of the six time periods Determine a daily
employee worksheet which satisfies the requirements with the least number of
personnel Formulate the problem as an LPP
[06]
(b) A company is currently involved in negotiations with its union on the upcoming
wage contract Positive signs in the table represent wage increase while negative
represents wage reduction What are the optimal strategies for the company as
well as the union What is the value of the game
[05]
C1 C2 C3 C4
U1 +025 +020 +014 +030
U2 +027 +016 +012 +014
U3 +035 +008 +015 +019
U4 -002 +008 +013 -000
(c) Solve the following pay off matrix for player A Find the optimal strategies and
value of the game
B1 B2 B3
A1 0 2 2
A2 3 -1 2
A3 4 4 -2
[04]
OR
Q2 (a) Three grades of coal A B amp C contain Phosphorus and ash as impurities In a
particular industrial process fuel upto 100 ton is required which should contain
ash not more than 3 and phosphorus not more than 003 It is desired to
maximize the profit while satisfying these conditions There is unlimited supply of
each grade The percentage of impurities and the profits of grades are given
below
Coal Phosphorus () Ash () Profits (Rston)
A 002 30 12
B 004 20 15
C 003 50 14
[06]
(b) In a well known childrenrsquos game each player says lsquostonersquo or lsquoscissorsrsquo or lsquopaperrsquo If
one says lsquostonersquo and the other lsquoscissorsrsquo then the former wins a rupee Similarly
lsquoscissorsrsquo beat lsquopaperrsquo and lsquopaperrsquo beat lsquostonesrsquo ie the player calling the former
word wins a rupee The the two players name the same item then there is a tie
there is no payoff Write down the payoff matrix find the value of the game and
hence write down the optimal strategies for both the players
[05]
(c) A and B play a game in which each has three coins Rs 1 Rs 2 Rs5 Each
player selects a coin without the knowledge of others choice If the sum of the
coins is even then A wins coin of B otherwise B wins coin A Find out the best
strategy for each player and the value of the game
[04]
Q3 (a) Solve the following problem using transportation method Find the optimum
cost
From To Supply
1 2 3 4 5
1 80 69 103 64 61 12
2 47 100 72 65 40 16
3 16 103 87 36 94 20
[06]
4 86 15 57 19 25 8
5 27 20 72 94 19 8
Demand 16 14 18 6 10
(b) Four machines M1 M2 M3 M4 are to be installed in a machine shop at 5 vacant
places A B C D and E Because of limited space M2 cannot be placed at C and
M3 cannot be placed at A The assignment cost of the machine is as below Find
optimal assignment schedule
A B C D E
M1 4 6 10 5 6
M2 7 4 - 5 4
M3 - 6 9 6 2
M4 9 3 7 2 3
[05]
(c) Calculate the transportation cost using North-west corner rule Least cost method
and VAM where cell entries are unit costs
D1 D2 D3 D4 D5 Available
O1 68 35 4 74 15 18
O2 57 88 91 3 8 17
O3 91 60 75 45 60 19
O4 52 53 24 7 82 13
O5 51 18 82 13 7 15
Required 16 18 20 14 14 8282
[04]
OR
Q3 (a) Determine the optimum solution to the problem given below Obtain the initial
solution by VAM
M1 M2 M3 M4 Supply
P1 6 4 9 1 40
P2 20 6 11 3 40
P3 7 1 0 14 50
P4 7 1 12 6 90
Demand 90 30 50 30
[06]
(b) A solicitors firm employs typist on hourly price-rate basis for daily work There
are five typist available with hourly charges and speed mentioned in matrix
below
Typist A B C D E
Rate per hr 5 6 3 4 4
No of pages
typedhour
12 14 8 10 11
There are five jobs available to the firm and it wishes to allocate one job to one
typist only The typist is paid for full hour even if he works for fraction of an
hour The details of the job are given in matrix below
[05]
Job P Q R S T
No of pages 199 175 145 298 178
Find the least cost allocation for the firm using assignment model
(c) Consider the following transportation table The costs are given in rupees the
supply and demand are in units Determine the optimum solution
Destination
Source
1 2 3 4 5 Supply
I 40 36 26 38 30 160
II 38 28 34 34 198 280
III 36 38 24 28 30 240
Demand 160 160 200 120 240 680
880
[04]
Enroll No _____________
SILVER OAK COLLEGE OF ENGINEERING amp TECHNOLOGY
ADITYA SILVER OAK COLLEGE OF ENGINEERING amp TECHNOLOGY
BE - SEMESTERndashVII bull MID SEMESTER-I EXAMINATION ndash WINTER 2018
SUBJECT POWER PLANT ENGINEERING (2171910) (ME)
DATE 10-08-2018 TIME 1000 am to 1130 am TOTAL MARKS40
Instructions 1 All the questions are compulsory 2 Figures to the right indicate full marks 3 Assume suitable data if required
Q1 (a) Draw general layout of Modern Thermal Power plant [05]
(b) Write short note on nuclear fission and fusion [05]
Q2 (a) A gas turbine installation works on Brayton cycle between the temperature
limits of 35 oC and 715 oC For the maximum work to be developed calculate
temperature at the end of compression pressure ratio and thermal efficiency
[06]
(b) Explain pneumatic ash handling system [05]
(c) Give difference between Open cycle and Closed cycle gas turbine [04]
OR
Q2 (a) The air enters the compressor of an open cycle constant pressure gas turbine at
a pressure of 1 bar and temperature 20 oC The temperature of the air after
compression is 4 bar the isentropic efficiency of compressor and turbine are
80 and 85 respectively The air fuel ratio used as 901 of the flow rate of air
is 3kgsec Find
(1) Power developed
(2) Thermal efficiency of the cycle
Assume Cp=1 kJkgK and γ = 14 for air amp gas and CV of fuel= 41800 kJkg
[06]
(b) Draw a neat sketch of CANDU reactor and explain its working [05]
(c) Enlist the effect of operating variables on thermal efficiency of the gas turbine
cycle Explain any two in detail
[04]
Q3 (a) Explain combined steam and gas turbine cycle with schematic and T-S
diagram
[06]
(b) Explain the working of electrostatic precipitator [05]
(c) Explain the factors affecting selection of Power plant site [04]
OR
Q3 (a) Draw the diagram of nuclear reactor amp explain the function of each part [06]
(b) Discuss cyclone burner used for pulverized fuel with neat sketch [05]
(c) Explain ideal Brayton cycle with p-v and T-S diagram [04]
Enroll No _____________
SILVER OAK COLLEGE OF ENGINEERING amp TECHNOLOGY
ADITYA SILVER OAK INSTITUTE OF TECHNOLOGY
BE - SEMESTERndashVII bull MID SEMESTER-I EXAMINATION ndash WINTER 2018
SUBJECT OPERATIONAL RESEARCH (2171901) (ME)
DATE 06-08-2018 TIME1000 am to 1130 am TOTAL MARKS40
Instructions 1 All the questions are compulsory 2 Figures to the right indicate full marks 3 Assume suitable data if required
Q1 (a) Comment on the following statements
1) OR is the art of winning wars without actually fighting them
2) OR is the art of finding bad answers to situations where in otherwise worse
exist
3) OR replaces management by personality
[03]
(b) A firm produces an alloy having maximum specific gravity of 098 minimum
chromium content of 8 and minimum melting point of 450 C Raw materials A
B C have the properties as shown in the table below
Property Properties of raw material
A B C
Specific gravity 092 097 104
Chromium 7 13 16
Melting Point 713 K 763 K 753 K
Cost of various raw materials per ton are Rs 90- for A Rs 280- for B and Rs
40- for C Formulate the LPP where the cost of raw material is minimum
[03]
(c) Find the minimum value of Z= -x1 + 2x2 in first quadrant
Subject to ndashx1 + 3x2 le 10
x1 + x2 le 6
x1 ndash x2 le 2
[04]
Q2 (a) A 24 hour supermarket has the following minimal requirements for cashiers
Period
1 2 3 4 5 6
Time of the day (24 hr) 3-7 7-11 11-15 15-19 19-23 23-3
Minimum number required 7 20 14 20 10 5
Period 1 follows immediately after period 6 A cashier works eight consecutive
hours starting at the beginning of one of the six time periods Determine a daily
employee worksheet which satisfies the requirements with the least number of
personnel Formulate the problem as an LPP
[06]
(b) A company is currently involved in negotiations with its union on the upcoming
wage contract Positive signs in the table represent wage increase while negative
represents wage reduction What are the optimal strategies for the company as
well as the union What is the value of the game
[05]
C1 C2 C3 C4
U1 +025 +020 +014 +030
U2 +027 +016 +012 +014
U3 +035 +008 +015 +019
U4 -002 +008 +013 -000
(c) Solve the following pay off matrix for player A Find the optimal strategies and
value of the game
B1 B2 B3
A1 0 2 2
A2 3 -1 2
A3 4 4 -2
[04]
OR
Q2 (a) Three grades of coal A B amp C contain Phosphorus and ash as impurities In a
particular industrial process fuel upto 100 ton is required which should contain
ash not more than 3 and phosphorus not more than 003 It is desired to
maximize the profit while satisfying these conditions There is unlimited supply of
each grade The percentage of impurities and the profits of grades are given
below
Coal Phosphorus () Ash () Profits (Rston)
A 002 30 12
B 004 20 15
C 003 50 14
[06]
(b) In a well known childrenrsquos game each player says lsquostonersquo or lsquoscissorsrsquo or lsquopaperrsquo If
one says lsquostonersquo and the other lsquoscissorsrsquo then the former wins a rupee Similarly
lsquoscissorsrsquo beat lsquopaperrsquo and lsquopaperrsquo beat lsquostonesrsquo ie the player calling the former
word wins a rupee The the two players name the same item then there is a tie
there is no payoff Write down the payoff matrix find the value of the game and
hence write down the optimal strategies for both the players
[05]
(c) A and B play a game in which each has three coins Rs 1 Rs 2 Rs5 Each
player selects a coin without the knowledge of others choice If the sum of the
coins is even then A wins coin of B otherwise B wins coin A Find out the best
strategy for each player and the value of the game
[04]
Q3 (a) Solve the following problem using transportation method Find the optimum
cost
From To Supply
1 2 3 4 5
1 80 69 103 64 61 12
2 47 100 72 65 40 16
3 16 103 87 36 94 20
[06]
4 86 15 57 19 25 8
5 27 20 72 94 19 8
Demand 16 14 18 6 10
(b) Four machines M1 M2 M3 M4 are to be installed in a machine shop at 5 vacant
places A B C D and E Because of limited space M2 cannot be placed at C and
M3 cannot be placed at A The assignment cost of the machine is as below Find
optimal assignment schedule
A B C D E
M1 4 6 10 5 6
M2 7 4 - 5 4
M3 - 6 9 6 2
M4 9 3 7 2 3
[05]
(c) Calculate the transportation cost using North-west corner rule Least cost method
and VAM where cell entries are unit costs
D1 D2 D3 D4 D5 Available
O1 68 35 4 74 15 18
O2 57 88 91 3 8 17
O3 91 60 75 45 60 19
O4 52 53 24 7 82 13
O5 51 18 82 13 7 15
Required 16 18 20 14 14 8282
[04]
OR
Q3 (a) Determine the optimum solution to the problem given below Obtain the initial
solution by VAM
M1 M2 M3 M4 Supply
P1 6 4 9 1 40
P2 20 6 11 3 40
P3 7 1 0 14 50
P4 7 1 12 6 90
Demand 90 30 50 30
[06]
(b) A solicitors firm employs typist on hourly price-rate basis for daily work There
are five typist available with hourly charges and speed mentioned in matrix
below
Typist A B C D E
Rate per hr 5 6 3 4 4
No of pages
typedhour
12 14 8 10 11
There are five jobs available to the firm and it wishes to allocate one job to one
typist only The typist is paid for full hour even if he works for fraction of an
hour The details of the job are given in matrix below
[05]
Job P Q R S T
No of pages 199 175 145 298 178
Find the least cost allocation for the firm using assignment model
(c) Consider the following transportation table The costs are given in rupees the
supply and demand are in units Determine the optimum solution
Destination
Source
1 2 3 4 5 Supply
I 40 36 26 38 30 160
II 38 28 34 34 198 280
III 36 38 24 28 30 240
Demand 160 160 200 120 240 680
880
[04]
Enroll No _____________
SILVER OAK COLLEGE OF ENGINEERING amp TECHNOLOGY
ADITYA SILVER OAK COLLEGE OF ENGINEERING amp TECHNOLOGY
BE - SEMESTERndashVII bull MID SEMESTER-I EXAMINATION ndash WINTER 2018
SUBJECT POWER PLANT ENGINEERING (2171910) (ME)
DATE 10-08-2018 TIME 1000 am to 1130 am TOTAL MARKS40
Instructions 1 All the questions are compulsory 2 Figures to the right indicate full marks 3 Assume suitable data if required
Q1 (a) Draw general layout of Modern Thermal Power plant [05]
(b) Write short note on nuclear fission and fusion [05]
Q2 (a) A gas turbine installation works on Brayton cycle between the temperature
limits of 35 oC and 715 oC For the maximum work to be developed calculate
temperature at the end of compression pressure ratio and thermal efficiency
[06]
(b) Explain pneumatic ash handling system [05]
(c) Give difference between Open cycle and Closed cycle gas turbine [04]
OR
Q2 (a) The air enters the compressor of an open cycle constant pressure gas turbine at
a pressure of 1 bar and temperature 20 oC The temperature of the air after
compression is 4 bar the isentropic efficiency of compressor and turbine are
80 and 85 respectively The air fuel ratio used as 901 of the flow rate of air
is 3kgsec Find
(1) Power developed
(2) Thermal efficiency of the cycle
Assume Cp=1 kJkgK and γ = 14 for air amp gas and CV of fuel= 41800 kJkg
[06]
(b) Draw a neat sketch of CANDU reactor and explain its working [05]
(c) Enlist the effect of operating variables on thermal efficiency of the gas turbine
cycle Explain any two in detail
[04]
Q3 (a) Explain combined steam and gas turbine cycle with schematic and T-S
diagram
[06]
(b) Explain the working of electrostatic precipitator [05]
(c) Explain the factors affecting selection of Power plant site [04]
OR
Q3 (a) Draw the diagram of nuclear reactor amp explain the function of each part [06]
(b) Discuss cyclone burner used for pulverized fuel with neat sketch [05]
(c) Explain ideal Brayton cycle with p-v and T-S diagram [04]
C1 C2 C3 C4
U1 +025 +020 +014 +030
U2 +027 +016 +012 +014
U3 +035 +008 +015 +019
U4 -002 +008 +013 -000
(c) Solve the following pay off matrix for player A Find the optimal strategies and
value of the game
B1 B2 B3
A1 0 2 2
A2 3 -1 2
A3 4 4 -2
[04]
OR
Q2 (a) Three grades of coal A B amp C contain Phosphorus and ash as impurities In a
particular industrial process fuel upto 100 ton is required which should contain
ash not more than 3 and phosphorus not more than 003 It is desired to
maximize the profit while satisfying these conditions There is unlimited supply of
each grade The percentage of impurities and the profits of grades are given
below
Coal Phosphorus () Ash () Profits (Rston)
A 002 30 12
B 004 20 15
C 003 50 14
[06]
(b) In a well known childrenrsquos game each player says lsquostonersquo or lsquoscissorsrsquo or lsquopaperrsquo If
one says lsquostonersquo and the other lsquoscissorsrsquo then the former wins a rupee Similarly
lsquoscissorsrsquo beat lsquopaperrsquo and lsquopaperrsquo beat lsquostonesrsquo ie the player calling the former
word wins a rupee The the two players name the same item then there is a tie
there is no payoff Write down the payoff matrix find the value of the game and
hence write down the optimal strategies for both the players
[05]
(c) A and B play a game in which each has three coins Rs 1 Rs 2 Rs5 Each
player selects a coin without the knowledge of others choice If the sum of the
coins is even then A wins coin of B otherwise B wins coin A Find out the best
strategy for each player and the value of the game
[04]
Q3 (a) Solve the following problem using transportation method Find the optimum
cost
From To Supply
1 2 3 4 5
1 80 69 103 64 61 12
2 47 100 72 65 40 16
3 16 103 87 36 94 20
[06]
4 86 15 57 19 25 8
5 27 20 72 94 19 8
Demand 16 14 18 6 10
(b) Four machines M1 M2 M3 M4 are to be installed in a machine shop at 5 vacant
places A B C D and E Because of limited space M2 cannot be placed at C and
M3 cannot be placed at A The assignment cost of the machine is as below Find
optimal assignment schedule
A B C D E
M1 4 6 10 5 6
M2 7 4 - 5 4
M3 - 6 9 6 2
M4 9 3 7 2 3
[05]
(c) Calculate the transportation cost using North-west corner rule Least cost method
and VAM where cell entries are unit costs
D1 D2 D3 D4 D5 Available
O1 68 35 4 74 15 18
O2 57 88 91 3 8 17
O3 91 60 75 45 60 19
O4 52 53 24 7 82 13
O5 51 18 82 13 7 15
Required 16 18 20 14 14 8282
[04]
OR
Q3 (a) Determine the optimum solution to the problem given below Obtain the initial
solution by VAM
M1 M2 M3 M4 Supply
P1 6 4 9 1 40
P2 20 6 11 3 40
P3 7 1 0 14 50
P4 7 1 12 6 90
Demand 90 30 50 30
[06]
(b) A solicitors firm employs typist on hourly price-rate basis for daily work There
are five typist available with hourly charges and speed mentioned in matrix
below
Typist A B C D E
Rate per hr 5 6 3 4 4
No of pages
typedhour
12 14 8 10 11
There are five jobs available to the firm and it wishes to allocate one job to one
typist only The typist is paid for full hour even if he works for fraction of an
hour The details of the job are given in matrix below
[05]
Job P Q R S T
No of pages 199 175 145 298 178
Find the least cost allocation for the firm using assignment model
(c) Consider the following transportation table The costs are given in rupees the
supply and demand are in units Determine the optimum solution
Destination
Source
1 2 3 4 5 Supply
I 40 36 26 38 30 160
II 38 28 34 34 198 280
III 36 38 24 28 30 240
Demand 160 160 200 120 240 680
880
[04]
Enroll No _____________
SILVER OAK COLLEGE OF ENGINEERING amp TECHNOLOGY
ADITYA SILVER OAK COLLEGE OF ENGINEERING amp TECHNOLOGY
BE - SEMESTERndashVII bull MID SEMESTER-I EXAMINATION ndash WINTER 2018
SUBJECT POWER PLANT ENGINEERING (2171910) (ME)
DATE 10-08-2018 TIME 1000 am to 1130 am TOTAL MARKS40
Instructions 1 All the questions are compulsory 2 Figures to the right indicate full marks 3 Assume suitable data if required
Q1 (a) Draw general layout of Modern Thermal Power plant [05]
(b) Write short note on nuclear fission and fusion [05]
Q2 (a) A gas turbine installation works on Brayton cycle between the temperature
limits of 35 oC and 715 oC For the maximum work to be developed calculate
temperature at the end of compression pressure ratio and thermal efficiency
[06]
(b) Explain pneumatic ash handling system [05]
(c) Give difference between Open cycle and Closed cycle gas turbine [04]
OR
Q2 (a) The air enters the compressor of an open cycle constant pressure gas turbine at
a pressure of 1 bar and temperature 20 oC The temperature of the air after
compression is 4 bar the isentropic efficiency of compressor and turbine are
80 and 85 respectively The air fuel ratio used as 901 of the flow rate of air
is 3kgsec Find
(1) Power developed
(2) Thermal efficiency of the cycle
Assume Cp=1 kJkgK and γ = 14 for air amp gas and CV of fuel= 41800 kJkg
[06]
(b) Draw a neat sketch of CANDU reactor and explain its working [05]
(c) Enlist the effect of operating variables on thermal efficiency of the gas turbine
cycle Explain any two in detail
[04]
Q3 (a) Explain combined steam and gas turbine cycle with schematic and T-S
diagram
[06]
(b) Explain the working of electrostatic precipitator [05]
(c) Explain the factors affecting selection of Power plant site [04]
OR
Q3 (a) Draw the diagram of nuclear reactor amp explain the function of each part [06]
(b) Discuss cyclone burner used for pulverized fuel with neat sketch [05]
(c) Explain ideal Brayton cycle with p-v and T-S diagram [04]
4 86 15 57 19 25 8
5 27 20 72 94 19 8
Demand 16 14 18 6 10
(b) Four machines M1 M2 M3 M4 are to be installed in a machine shop at 5 vacant
places A B C D and E Because of limited space M2 cannot be placed at C and
M3 cannot be placed at A The assignment cost of the machine is as below Find
optimal assignment schedule
A B C D E
M1 4 6 10 5 6
M2 7 4 - 5 4
M3 - 6 9 6 2
M4 9 3 7 2 3
[05]
(c) Calculate the transportation cost using North-west corner rule Least cost method
and VAM where cell entries are unit costs
D1 D2 D3 D4 D5 Available
O1 68 35 4 74 15 18
O2 57 88 91 3 8 17
O3 91 60 75 45 60 19
O4 52 53 24 7 82 13
O5 51 18 82 13 7 15
Required 16 18 20 14 14 8282
[04]
OR
Q3 (a) Determine the optimum solution to the problem given below Obtain the initial
solution by VAM
M1 M2 M3 M4 Supply
P1 6 4 9 1 40
P2 20 6 11 3 40
P3 7 1 0 14 50
P4 7 1 12 6 90
Demand 90 30 50 30
[06]
(b) A solicitors firm employs typist on hourly price-rate basis for daily work There
are five typist available with hourly charges and speed mentioned in matrix
below
Typist A B C D E
Rate per hr 5 6 3 4 4
No of pages
typedhour
12 14 8 10 11
There are five jobs available to the firm and it wishes to allocate one job to one
typist only The typist is paid for full hour even if he works for fraction of an
hour The details of the job are given in matrix below
[05]
Job P Q R S T
No of pages 199 175 145 298 178
Find the least cost allocation for the firm using assignment model
(c) Consider the following transportation table The costs are given in rupees the
supply and demand are in units Determine the optimum solution
Destination
Source
1 2 3 4 5 Supply
I 40 36 26 38 30 160
II 38 28 34 34 198 280
III 36 38 24 28 30 240
Demand 160 160 200 120 240 680
880
[04]
Enroll No _____________
SILVER OAK COLLEGE OF ENGINEERING amp TECHNOLOGY
ADITYA SILVER OAK COLLEGE OF ENGINEERING amp TECHNOLOGY
BE - SEMESTERndashVII bull MID SEMESTER-I EXAMINATION ndash WINTER 2018
SUBJECT POWER PLANT ENGINEERING (2171910) (ME)
DATE 10-08-2018 TIME 1000 am to 1130 am TOTAL MARKS40
Instructions 1 All the questions are compulsory 2 Figures to the right indicate full marks 3 Assume suitable data if required
Q1 (a) Draw general layout of Modern Thermal Power plant [05]
(b) Write short note on nuclear fission and fusion [05]
Q2 (a) A gas turbine installation works on Brayton cycle between the temperature
limits of 35 oC and 715 oC For the maximum work to be developed calculate
temperature at the end of compression pressure ratio and thermal efficiency
[06]
(b) Explain pneumatic ash handling system [05]
(c) Give difference between Open cycle and Closed cycle gas turbine [04]
OR
Q2 (a) The air enters the compressor of an open cycle constant pressure gas turbine at
a pressure of 1 bar and temperature 20 oC The temperature of the air after
compression is 4 bar the isentropic efficiency of compressor and turbine are
80 and 85 respectively The air fuel ratio used as 901 of the flow rate of air
is 3kgsec Find
(1) Power developed
(2) Thermal efficiency of the cycle
Assume Cp=1 kJkgK and γ = 14 for air amp gas and CV of fuel= 41800 kJkg
[06]
(b) Draw a neat sketch of CANDU reactor and explain its working [05]
(c) Enlist the effect of operating variables on thermal efficiency of the gas turbine
cycle Explain any two in detail
[04]
Q3 (a) Explain combined steam and gas turbine cycle with schematic and T-S
diagram
[06]
(b) Explain the working of electrostatic precipitator [05]
(c) Explain the factors affecting selection of Power plant site [04]
OR
Q3 (a) Draw the diagram of nuclear reactor amp explain the function of each part [06]
(b) Discuss cyclone burner used for pulverized fuel with neat sketch [05]
(c) Explain ideal Brayton cycle with p-v and T-S diagram [04]
Job P Q R S T
No of pages 199 175 145 298 178
Find the least cost allocation for the firm using assignment model
(c) Consider the following transportation table The costs are given in rupees the
supply and demand are in units Determine the optimum solution
Destination
Source
1 2 3 4 5 Supply
I 40 36 26 38 30 160
II 38 28 34 34 198 280
III 36 38 24 28 30 240
Demand 160 160 200 120 240 680
880
[04]
Enroll No _____________
SILVER OAK COLLEGE OF ENGINEERING amp TECHNOLOGY
ADITYA SILVER OAK COLLEGE OF ENGINEERING amp TECHNOLOGY
BE - SEMESTERndashVII bull MID SEMESTER-I EXAMINATION ndash WINTER 2018
SUBJECT POWER PLANT ENGINEERING (2171910) (ME)
DATE 10-08-2018 TIME 1000 am to 1130 am TOTAL MARKS40
Instructions 1 All the questions are compulsory 2 Figures to the right indicate full marks 3 Assume suitable data if required
Q1 (a) Draw general layout of Modern Thermal Power plant [05]
(b) Write short note on nuclear fission and fusion [05]
Q2 (a) A gas turbine installation works on Brayton cycle between the temperature
limits of 35 oC and 715 oC For the maximum work to be developed calculate
temperature at the end of compression pressure ratio and thermal efficiency
[06]
(b) Explain pneumatic ash handling system [05]
(c) Give difference between Open cycle and Closed cycle gas turbine [04]
OR
Q2 (a) The air enters the compressor of an open cycle constant pressure gas turbine at
a pressure of 1 bar and temperature 20 oC The temperature of the air after
compression is 4 bar the isentropic efficiency of compressor and turbine are
80 and 85 respectively The air fuel ratio used as 901 of the flow rate of air
is 3kgsec Find
(1) Power developed
(2) Thermal efficiency of the cycle
Assume Cp=1 kJkgK and γ = 14 for air amp gas and CV of fuel= 41800 kJkg
[06]
(b) Draw a neat sketch of CANDU reactor and explain its working [05]
(c) Enlist the effect of operating variables on thermal efficiency of the gas turbine
cycle Explain any two in detail
[04]
Q3 (a) Explain combined steam and gas turbine cycle with schematic and T-S
diagram
[06]
(b) Explain the working of electrostatic precipitator [05]
(c) Explain the factors affecting selection of Power plant site [04]
OR
Q3 (a) Draw the diagram of nuclear reactor amp explain the function of each part [06]
(b) Discuss cyclone burner used for pulverized fuel with neat sketch [05]
(c) Explain ideal Brayton cycle with p-v and T-S diagram [04]
Enroll No _____________
SILVER OAK COLLEGE OF ENGINEERING amp TECHNOLOGY
ADITYA SILVER OAK COLLEGE OF ENGINEERING amp TECHNOLOGY
BE - SEMESTERndashVII bull MID SEMESTER-I EXAMINATION ndash WINTER 2018
SUBJECT POWER PLANT ENGINEERING (2171910) (ME)
DATE 10-08-2018 TIME 1000 am to 1130 am TOTAL MARKS40
Instructions 1 All the questions are compulsory 2 Figures to the right indicate full marks 3 Assume suitable data if required
Q1 (a) Draw general layout of Modern Thermal Power plant [05]
(b) Write short note on nuclear fission and fusion [05]
Q2 (a) A gas turbine installation works on Brayton cycle between the temperature
limits of 35 oC and 715 oC For the maximum work to be developed calculate
temperature at the end of compression pressure ratio and thermal efficiency
[06]
(b) Explain pneumatic ash handling system [05]
(c) Give difference between Open cycle and Closed cycle gas turbine [04]
OR
Q2 (a) The air enters the compressor of an open cycle constant pressure gas turbine at
a pressure of 1 bar and temperature 20 oC The temperature of the air after
compression is 4 bar the isentropic efficiency of compressor and turbine are
80 and 85 respectively The air fuel ratio used as 901 of the flow rate of air
is 3kgsec Find
(1) Power developed
(2) Thermal efficiency of the cycle
Assume Cp=1 kJkgK and γ = 14 for air amp gas and CV of fuel= 41800 kJkg
[06]
(b) Draw a neat sketch of CANDU reactor and explain its working [05]
(c) Enlist the effect of operating variables on thermal efficiency of the gas turbine
cycle Explain any two in detail
[04]
Q3 (a) Explain combined steam and gas turbine cycle with schematic and T-S
diagram
[06]
(b) Explain the working of electrostatic precipitator [05]
(c) Explain the factors affecting selection of Power plant site [04]
OR
Q3 (a) Draw the diagram of nuclear reactor amp explain the function of each part [06]
(b) Discuss cyclone burner used for pulverized fuel with neat sketch [05]
(c) Explain ideal Brayton cycle with p-v and T-S diagram [04]