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DEPARTMENT OF MECHANICAL MVJCE

I / II SEMESTER 1 COURSE DIARY

10 EME14/24 ELEMENTS OF MECHANICAL

ENGINEERING

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SYLLABUS

SUB CODE : 10EME14/10EME24 EXAM MARKS : 100

IAMARKS : 25 TOTAL HOURS: 52HOURS/WEEK: 04 EXAM HOURS : 03

PART A

UNIT-I

ENERGY AND STEAM

Forms, Sources and Classification of energy. Utilization of energy with simple block diagrams. Steam

formation. Types of steam. Steam properties Specific Volume, Enthalpy and Internal energy. (Simple

numerical problems)

Steam boilers classification, Lancashire boiler, Babcock and Wilcox boiler, boiler mountings,accessories, their locations and applications. (No sketches for mountings and accessories) 07 Hrs

UNIT-II

TURBINES

STEAM TURBINES Classification, Principle of operation of Impulse and reaction. Delavals turbine,

Parsons turbine. Compounding of Impulse turbines.GAS TURBINES Classification, Working principles and Operations of Open cycle and closed cyclegas turbines.

WATER TURBINES Classification, Principles and operations of Pelton wheel, Francis turbine and

Kaplan turbine 07 Hrs

UNIT-III

INTERNAL COMBUSTION ENGINESClassification, I.C. Engines parts, 2/4 Stroke Petrol and 4-stroke diesel engines. P-V diagrams of Ottoand Diesel cycles. Simple problems on indicated power, brake power, indicated thermal efficiency, brake

thermal efficiency, mechanical efficiency and specific fuel consumption. 06 Hrs

UNIT-IV

REFRIGERATION AND AIR CONDITIONINGRefrigerants, properties of refrigerants, list of commonly used refrigerants. Refrigeration - Definitions -

Refrigerating effect, Ton of Refrigeration, Ice making capacity, COP, Relative COP, Unit ofRefrigeration. Principle and working of vapor compression refrigeration and vapor absorption

refrigeration. Principles and applications of air conditioners, Room air conditioner. 06 Hrs

PART BUNIT-V

LATHE AND DRILLING MACHINES

LATHE -Principle of working of a Centre Lathe. Parts of a lathe. Operations on lathe - Turning, Facing,

Knurling, Thread Cutting, Drilling, Taper Turning by Tailstock offset method and Compound slide

swiveling method. Specification of Lathe.

DRILLING MACHINE Principle of working and classification of Drilling Machines. Bench DrillingMachine, Radial Drilling Machine. Operations on Drilling Machine -Drilling, Boring, Reaming, Tapping,

Counter Sinking, Counter Boring and Spot facing. Specification of radial drilling machine. 07 Hrs

UNIT-VI

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MILLING AND GRINDING MACHINES

MILLING MACHINE Principle of Milling, Types of Milling Machines. Principle & Working of

Horizontal and Vertical Milling Machines. Milling Processes - Plane Milling, End Milling, Slot Milling,

Angular Milling, Form Milling, Straddle Milling and Gang Milling. Specification of Universal MillingMachine.

GRINDING MACHINE Principle and classification of Grinding Machines. Abrasives- Definition,types and Applications. Bonding Materials. Type of Grinding Machines, Principle and Working of

Surface Grinding, Cylindrical Grinding and Center less Grinding. 07 Hrs

UNIT-VII

JOINING PROCESSES, LUBRICATION AND BEARINGS

SOLDERING, BRAZING AND WELDING

Definitions. Classification and method of Soldering, Brazing and Welding and Differences. Brief

Description of Arc Welding and Oxy-Acetylene Welding

LUBRICATION AND BEARINGSLubricants-Classification and properties. Screwcap, Tell-Tale, Drop feed, Wick feed and Needle

Lubricators. Ring, Splash and Full pressure lubrication. Classification of Bearings, Bushed bearing,

Pedestal bearing, Pivot bearing, Collar Bearings and Antifriction Bearings. 06 Hrs

UNIT-VIII

POWER TRANSMISSION

BELT DRIVES- Classification and applications, Derivations on Length of belt.

Definitions - Velocity ratio, Creep and slip, Idler pulley, stepped pulley and fast & loose pulley.

GEARS - Definitions, Terminology, types and uses. Gear Drives and Gear Trains Definitions and

classifications, Simple problems. 06 Hrs

TEXT BOOK:

1. A Text Book of Elements of Mechanical Engineering - S. Trymbaka Murthy, 3rdrevised edition 2006,I .K. International Publishing House Pvt. Ltd., New Delhi.

REFERENCE BOOKS:

1. A text Book of Elements of Mechanical Engineering K.R. Gopalkrishna, Subhash Publishers,Bangalore.

2. The Elements of Workshop Technology - Vol I & II , SKH Chowdhary, AKH Chowdhary , NirjharRoy, 11thedition 2001, Media Promotors and Publishers, Mumbai.

SCHEME OF EXAMINATIONOne full question to be set from each unit. Students have to answer any Fivefull questions out of eight

questions, choosing at least twoquestions from Part Aand two questions from Part B.

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LESSON PLAN

Semester: I/II

Total Periods : 62

Subject: Elements Of Mechanical Engineering Hours/Week : 04Subject Code: 10EME14 /24 Total Hrs : 52

No. of

PeriodTopics to be covered Remarks

PART A

UNIT 1:ENERGY AND STEAM

01 Introduction, Energy & Forms& Sources Of Energy02 Classification, Utilization Of Energy Sources.

03Fossil Fuels, Coal Formation, Petrol& Natural Gas Formation

Working Of Thermal Power Plant &Nuclear Plant04 Working Of Geothermal Power Plant, Hydel Plant05 Working Of Biomass, Tidal &Ocean Thermal Energy Conversion06 Working Of Solar Energy, Wind Energy Plants.07 Formation Of Steam At Constant Pressure08 Properties & Condition Of Steam, Problems

09Steam Boilers & Classification If Boilers, Construction &Working Of Babcock

& Wilcox Boiler10 Lancashire Boiler, Boiler Mountings & Accessories

UNIT 2:IITURBINES11 Steam Turbine Classification, Impulse Turbine

12 Reaction Turbine, Difference Between Impulse &Reaction Turbine13 Compounding Of Impulse Turbine,14 Advantages Of Steam Turbines Over Other Prime Movers

15Gas Turbine, Open & Closed Cycle Gas Turbine, Comparison Between Open &Closed Cycle Gas Turbine

16 Water Turbines, Classification & Pelton Wheel17 Francis Turbine & Kaplan Turbine

UNIT 3:INTERNAL COMBUSTION ENGINES18 Classification Of IC Engines, Parts Of IC Engine19 Four Stroke Petrol Engine20 Four Stroke Diesel Engine

21 Two Stroke Petrol Engine22 Comparison Between Petrol & Diesel Engine23 Difference Between Petrol & Diesel Engine24 Simple Calculations On IC Engines25 IC Engine Problems And Calculations

UNIT 4: REFRIGERATION AND AIR CONDITIONING26 Refrigeration, Terms Used In Refrigeration27 Parts Of Refrigerator& Types Of Refrigerant28 Vapour Compression Refrigeration System29 Vapour Absorption Refrigeration System

30

Comparison Between Vapour Compression & Vapour Absorption Refrigeration

System

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31 Principles and Applications of Air conditioners32 Working of Room air conditioner

PART BUnit 5: LATHE AND DRILLING MACHINES33 Lathes, Types Of Lathes, Parts Of Center Lathe34 Operations Performed On Lathes-Facing,Turning,Knurling35 Threading, drilling, Taper Turning by Tail stock offset Method.36 Taper Turning by Compound Slide swiveling Method, Specification of lathe.37 Principle of Working and classification of Drilling Machines38 Working of Bench Drilling Machine, Radial Drilling Machine

39Operations Performed On Drilling Machine.- Drilling, Reaming,

Boring,Tapping,Counter Sinking, Counter Boring, Spot Facing40 Specification Of Radial Drilling Machine.

UNIT 6: MILLING AND GRINDING MACHINES41 Principle of Milling, Types of Milling Machines.42 Principle & Working of Horizontal and Vertical Milling Machines.

43Milling Processes - Plane Milling, End Milling, Slot Milling, Angular Milling,

Form Milling, Straddle Milling and Gang Milling.44 Specification of Universal Milling Machine.

45Principle and classification of Grinding Machines.Abrasives- Definition, types and Applications. Bonding Materials.

46 Type of Grinding Machines, Principle and Working of Surface Grinding,47 Principle and Working of Cylindrical Grinding and Center less Grinding.

UNIT 7: JOINING PROCESSES, LUBRICATION AND BEARINGS

48 Definitions. Classification and method of Soldering,49 Classification and method of Brazing.

50Classification and method of Welding. Differences between Soldering, Brazing,Welding

51 Description of Arc Welding, Description of Oxy-Acetylene Welding

52Classification and properties Lubricants, Screw cap, Tell-Tale, Drop feed,.Lubrication.

53 Wick feed and Needle Lubricators. Ring, Splash and Full pressure lubrication54 Classification of Bearings, Bushed bearing, Pedestal bearing,55 Pivot bearing, Collar Bearings. Antifriction Bearings.

UNIT 8: POWER TRANSMISSION56 Types Of Belt Drives, Derivation For An Open Belt Drive57 Derivation For A Cross Belt Drive

58Definitions - Velocity ratio, Creep and slip, Idler pulley, stepped pulley and fast

& loose pulley. Angle Of Contact, Initial Tension In The Belt,59 Definitions, Terminology, types and uses. of Gears. Types of Gear Drives60 Definitions and classifications of Gear Trains

61 Simple Gear Trains,Compund Gear Trains

62 Simple Problems on Gear Trains

Signature of Staff

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QUESTION BANK

UNIT-1:

ENERGY AND STEAMSOURCES OF ENERGY

1. Explain briefly conventional energy sources.2. Explain briefly non-conventional energy sources.3. What are the advantages and disadvantages of renewable energy sources?4. What are the advantages and disadvantages of solar energy?5. Write a short note on geothermal energy.6. Write a short note on wind and tidal energy.7. Distinguish between conventional and non-conventional energy sources.8. Distinguish between renewable energy sources and non- renewable energy sources.9. Explain the Working of Ocean Thermal Energy Conversion (OTEC) with neat sketch.10. List the various Sources of energy with minimum two examples for each source.

STEAM FORMATION& STEAM BOILERS

1. Explain with a neat sketch formation of steam at constant pressure.2. Define a) Sensible heat b)Latent heat c) Total Heat of Evaporation d) Degree of Super heat3. Define Dryness Fraction. Explain the different states of Steam4. What are the advantages of super heated steam?5. Write the differences between Super heated steam and Dry Saturated Steam.6. Briefly Explain

a) Specific volume of Wet Steam

b) Specific volume of Dry Steamc) Specific volume of Super Heated Steam

d) External Work done during Evaporation

e) Internal energy of Steam

7. Find the Internal Energy of 1 Kg of Steam at 0.8 Mpa .a) When the dryness fraction is 0.9 b) whenthe steam is dry c) when it is super heated to 300 C

8. Six Kg of wet steam contains 0.56 Kg of water particles in it. What is the dryness fraction of thesteam?

9. Find the Specific Volume of 2 Kg of Steam at 8 bar.a) When the dryness fraction is 0.9b) When the steam is dryc) When it is super heated to 300 C

10.Steam initially at nine bars and 0.98 dryness. Find the quality and temperature of the steam a)when the steam loses 50 kJ/Kg at constant pressure

11.When the steam gains 100 kJ/Kg at constant pressure12.Define and Classify Steam Boilers.13.Explain with Neat Sketch the construction and working of Lancashire boiler.14.Explain with Neat Sketch the construction and working of Wilcox and Babcock boiler.15.Compare Water tube and Fire Tube Boiler.16.Distinguish between mountings and accessories of the boiler. Name any three Mountings and two

Accessories.

17.Name any five Boiler Mountings and Accessories.

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UNIT-2:

TURBINES

STEAM TURBINES

1. Write any five advantages Steam Turbines over other Prime Movers.2. Explain with a neat sketch Working Principle of Impulse Turbine.3. Explain with a neat sketch Working Principle of Reaction Turbine.4. Differentiate between Impulse and Reaction Turbine.5. What is Compounding of Steam turbines and explain its types.6. Explain about Velocity Compounding of Steam Turbines with neat sketch7. Explain about Pressure compounding of Steam Turbines with neat sketch..8. Explain about Velocity and Pressure compounding of Steam Turbines with neat sketchGAS TURBINES

9. Explain with neat sketches open cycle and closed cycle gas turbines10.Write applications of Gas turbine.11.Differentiate between closed cycle and open cycle gas turbine.WATER TURBINES

12.With a neat sketch, explain the pelton wheel.13.Write a classification of Water Turbines14.With a neat sketch, explain the operation of Kaplan and Francis turbine.15.. Differentiate between Kaplan and Francis Turbine.

UNIT 3:

INTERNAL COMBUSTION ENGINES

1. Define and classify Internal Combustion engines.2. With a neat sketch describe the parts and functions of an IC engine.3. With a neat sketch explain Terminology of an IC engine4. With a neat sketch explain the 4-stroke Petrol engines working principle5. With a neat sketch explain the 4-stroke Diesel engines working principle6. With a neat sketch explain the 2-stroke Petrol engines working principle7. With a neat sketch explain the 2-stroke Diesel engines working principle8. Compare between 4stroke and 2 stroke engines.9. Compare between SI and CI engines.10.Calculate the Indicated Power of a Four Stroke petrol engine. The average piston speed is 70

m/min. and the mean effective pressure is 5.5 bars. The diameter of the piston is 150 mm.

11. A four stroke three cylinder SI Engine develops 60 KW of power at an average piston speed of 9m/s. If the mean effective pressure is six Mpa, stroke is 500 mm and the diameter to stroke ratio is

0.8, find the engine speed and the cylinder bore.

12.An IC Engine runs at 360 rpm developing 18 KW of brake power. The brake drum radius is 0.5 mand the dead weight is weighing 140 kg. If friction power is 50% of the brake power. Find theSpring Load and Indicated power.

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UNIT 4:

REFRIGERATION & AIR CONDITIONING

1. Briefly explain the concepts of Refrigeration2. With a neat sketch explain parts of a Refrigerator.3. With a neat sketch explain Vapour Compression refrigeration system.4. With a neat sketch explain vapour Absorption refrigeration system.5. List out the properties of a good refrigerant.6. Explain about some important refrigerants.7. Define air-conditioning and explain its principle.

PART B

UNIT 5:

LATHE AND DRILLING MACHINES

LATHE

1. What is a lathe? List the essential parts of a lathe. Explain the principle of a lathe2 Write the specifications of a lathe.3 Explain briefly about the types of lathe.4 Explain briefly all the functions of a lathe with a neat sketch.5 Explain any two methods of producing a conical surface (taper turning) in a lathe with a neat

sketch.6 Explain the operation of a thread cutting in lathe with a neat sketch.7 Draw the lathe, label all the parts and explain briefly any 4 parts in lathe.

DRILLING MACHINE

1. What is meant by drilling? What are the types of drilling machine?2. Explain the operation of radial drilling machine with a neat sketch.3. Explain the operation of Bench drilling machine with a neat sketch4. Explain briefly all the drilling operations with a neat sketch.5. Write the differences between drilling, reaming and boring.6. Write the differences between counter boring and countersinking.

UNIT 6:

MILLING AND GRINDING MACHINES

MILLING MACHINE

1. Write the principle of milling and write the types of milling machine.2. Explain the operation of horizontal milling machine with a neat sketch.3. Explain the operation of vertical milling machine with a neat sketch.4. What are differences between up milling and down milling?5. Explain briefly the milling operations with a neat sketch.

GRINDING MACHINES

1. What is meant by grinding? What are types of grinding machine?2. Write the principle of grinding?3. Write the various abrasives and bonding material used in grinding wheel4. Write the operation of surface grinding with a neat sketch.5. Explain briefly the operation of cylindrical grinding and center less grinding with a neat sketch.

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UNIT 7:

JOINING PROCESSES, LUBRICATION AND BEARINGS

SOLDERING, BRAZING AND WELDING

1. Write the differences between soldering, brazing and welding.2. Explain the soldering process with a neat sketch. What is the need of flux in soldering? Write the

flux using in soldering and the applications of soldering.

3. Explain the brazing process with a sketch and write the application of brazing.4. What is meant by welding? Write the difference between plastic welding and fusion welding.5. Explain the gas welding process and write the types of gas flames in gas Welding with a neat

sketch.6. Explain the process of arc welding with a neat sketch.LUBRICATION & BEARINGS

1. Define and classify the Bearings2. What are functions of a lubricant3. What are types of a lubricant4. What are the properties of a good lubricant5. With neat sketch explain the working of

A). Deep feed lubricator

B). Glass-bottle needle type lubricator.C). Telltale lubricator.

D). Screw- cap lubricator.

6.

Classify the different methods of lubrication. Explain any one with a neat sketch.

UNIT 8:

POWER TRANSMISSION

1. Define power transmission and explain the types of drives.2. With a neat sketch explain working of stepped cone pulley3. Derive an expression for length of a open belt drive4. Derive an expression for length of closed belt drive5. Derive an expression of belt tension of a flat belt drive.6. Define slip and its effect on velocity ratio.7. Mention the advantages and disadvantages of a flat belt drive.8. Mention the advantages and disadvantages of a V belt drives over flat belt drives.9. Explain the working of a gear drive10.Mention the advantages and disadvantages of a gear drive.11.Classify gears and explain.12.What are gears drives and explain its types.13.An engine is driven by a flat belt drive using an electric motor. The diameter of the

pulley on the motor is 1200 mm and the radius of the pulley on the engine is half radius of the

motor pulley. If the engine runs find the motor speed.

14.A flat belt drive is used to transmit power-using pulleys from a motor to a nearby engine shaft.The motor shaft and the engine shaft are placed 4 m apart. And lie in the same plane. The diameter

of the motor pulley is 800 mm and that of the engine shaft pulley is 400 mm. Find the length of

the belt used for the drive if a) the drive is Open b) the drive is crossed.

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15.Find the tension in the two sides of the belt if the difference between the higher and the lowertension is 1200 N. Assume an angle of contact of 150 and Co efficient of friction of 0.3.

16.A belt drive is used to transmit power between two parallel shafts placed 3000 mm apart. Thedriven pulley having 500 mm diameter and 160angle of lap runs at 180 rpm. If the coefficient offriction is 0.3 and initial tension is 8KN,find the power transmitted by the belt.

19.A simple gear train consists of three wheels having 40,50,70 teeth respectively. Find itsvelocity ratio. Driver wheel having 40 teeth rotates at 210 rpm in clockwise direction. Determine the

speed and the direction of driven wheel.

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First/second semester B.E.degree Examination Dec08/Jan09

Model Question Paper

Subject: Elements of Mechanical Engineering (06EME 14/24)

Time: 3Hrs Max Marks: 100

Note: 1. Answer any FIVE full question selecting atleast TWO questions from each Part

2. Answer all objective types questions only in first and second writing pages.3. Objective types questions should not be repeated.

PART-A

1. a) Choose the correct answer 1x4=4

i) The process in which, using the principle of Photovoltaic effect, The solar energy is directly converted

into Electrical Energy is Known as

A) HelioElectrical Process B) HelioThermal Process

c) Mechanical Process D) None

ii) The centrifugal forces generated by the earth rotation on the Far side results in another bulge rises on

this side of the earth are calledA) Lunar Tides B) Volcanoes

C) Earth Quakes D) None

iii) The difference between superheated temperature and the Saturation temperature of steam is called

A) Degree of Superheat B) Latent Heat of VaporizationC) Sensible Heat D) None

iV) Babcock and Wilcox boiler is an example of ----------- boiler

A) Fire tube B) water tube

C) Air tube D) Gas tube

b) Classify different sources of energy and give examples 06

C) With a neat sketch explain the working of Lancashire boiler 10

2. a) Choose the correct answer 1x4=4i) In Parsons turbine the ----------- pressure steam does not initially expand in the nozzle

A) High B) Low

C) Medium D) Critical

ii) De Laval Turbine is also called

A) Impulse steam turbine B) Gas turbine

C) Reaction steam turbine D) Water turbine

iii) Kaplan turbine is a ---------- turbine

A) Low Head reaction B) High head reaction

C) Impulse D) Fire tube

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iv) A prime mover in which the heat energy of the steam is transformed in to Mechanical energy directly

in the form of rotary motion is called-------A) Steam turbine B) water turbine

D) Generators C) Alternator

b) Explain the working principle of a Pelton wheel with a neat sketch 07C) Explain the working of an open cycle gas turbine with a power plant line diagram.

Enumerate the advantages of closed cycle gas turbine over open cycle gas turbine 09


i) In two stroke engines, number of rotation of the crank shaft to complete a cycle

A) 2 B) 4

C) 6 D) 1

ii) In petrol engines, Heat is supplied at constantA) Temperature B) Pressure

C) Volume C) Area

iii) Mechanical Efficiency is defined as the ratio of ---------- Efficiency and ---------- Efficiency.

A) Break Thermal & Indicated Thermal B) Indicated & Break Thermal

C) IP&BP D) None

iv) In IC Engines, connecting rod connects -----------&----------

A) Piston & crank Shaft B) inlet & outlet valvesC) Spark Plug D) None

b) Explain with sketch working of four stroke petrol engine with PV diagram 10

c) Find the indicated power of a four stroke petrol engine of swept volume of six liters and running

at 1000 rpm Take the mean efficient pressure as 600KN/m2. 06


i) A ------------ is an appliance in which the heat from the refrigerant is rejected at Higher temperature toanother medium.

A) Condenser B) refrigerant

C) Evaporator D) Radiator

ii) The performance of a refrigeration system is expressed by a factor known as -------

A) Coefficient of performance B) Mechanical EfficiencyC) overall Efficiency D) None

iii) One tone of refrigeration is equal to ------------kj/sec.

A) 3.5 B) 4.5

C) 5.5 D) 210

iv) Mono Chloro-difuloro Methane is a popular refrigerant called -------------

A) Water B) Freon22

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C) NH3 D) Carbon

PART-B

5. a) Choose the correct answer 1x4=4i) The method of machining operation in which the work piece is reduced to cylindrical section of

required diameter is called-------- operation.

A) Taper turning B) Plane Turning

C) Ec centric turning D) None

ii) ---------- is an operation to produce conical surface on the cylindrical work pieceA) Plane turning B) Taper turning

C) Boring D) Grinding

iii) ----------- is the process of generating internal threads

A) Tapping B) TurningC) Milling D) Knurling

iv) ----------- is the finishing operation to produce a flat round surface around alreadydrilled hole.

A) Spot facing B) Tapping

C) counter sinking D) None

b) Explain with sketch the mechanism of Taper turning by swiveling the Compound rest 07

c) Sketch and explain bench drilling machine 09

6. a) Choose the correct answer 1x4=4i) ----------- is the milling operation used to mill flat surfaces by mounting cutters with their axes

perpendicular to the milled surfaces

A) Form Milling B) Angular Milling

C) Gang Milling D) straddle.

ii) The horizontal shaft used to mount the milling cutter is called

A) Spindle B) Connecting rod

C) Saddle D) arbor

iii) ---------- is the mineral employed for sharpening, grinding and polishing operations

A) Grinder B) ShellacC) Abrasive D) Tool

iv) Grinding is also called

A) Abrasive Machining B) Twisting

C) Lapping D) Honing

b) Draw a schematic sketch of horizontal milling machine and explain the parts 08

c) With a neat sketch explain the principle of center less grinding process 08


i) Fusion welding is also known as

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A) Pressure Welding B) Resistance welding

C) Non Pressure Welding D) Thermit Welding

ii) --------- is the method of joining thin metal pieces using a dissimilar metal or an alloy by theapplication of heat

A) Soldering B) BrazingC) Welding D) Grinding

iii) The material used in brazing

A) Spelter B) Electrode

C) Solder C) All the above

iv) --------- is the measure of internal frication of lubricating oil

A) Viscosity B) Porosity

C) Electricity D) None

b) Distinguish amongst soldering, brazing and Welding 05c) Describe drop feed Lubricator with a neat sketch 05d) How bearings are classified? Sketch and explain bushed bearing 06


i) For converting rotary motion into linear motion, ---------- type of gears are used

A) Bevel Gears B) Spiral Gears

C) Spur Gears D) Rack & Pinion

ii) When the axes of the driver and follower shafts are intersecting, ------------ gears are usedA) Bevel B) Spiral

C) Helical D) Elliptical

iii) In an open belt drive, to increase the arc of contact of the belt and driven pulley

---------- is used.A) Jockey Pulley B) Stepped Cone Pulley

C) Fast & Lose Pulley D) Cross Belt.

iv) The ratio of diameters of the driver and driven pulleys is called --------

A) Module B) Velocity Ratio

C) Ratio of belt tension D) Pitch Circle diameter

b) Derive with usual notations, the relation to determine the length of belt in a cross Belt drive system 09

c) In a compound gear train, the wheels A, B, C&D have number of teeth 15, 30, 20&40 respectively. Thewheels B&C are keyed to the same spindle. If the Wheel A runs at 40 rpm, Find the speed of the wheel D

also sketch the Arrangement 07

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10 CED 14 / 10 CED 24 COMPUTER AIDEDENGINEERING DRAWING

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SYLLABUS

Sub Code: 10 CED 14 / 10 CED 24 IA Marks: 25

Hrs/ Week : 06 (Instruction 2 hr. +Sketching & Practice 4 hr.) Exam Hours : 03

Total Hrs. : 84 (Instruction 28 hr. +Sketching & Practice 56 hr.) Exam Marks : 100

1. Introduction to Computer Aided Sketching

Introduction, Drawing Instruments and their uses, BIS conventions, Lettering, Dimensioning and free

hand practicing.

Computer screen, layout of the software, standard tool bar/menus and description of most commonly usedtool bars, navigational tools. Co-ordinate system and reference planes. Definitions of HP, VP, RPP &

LPP. Creation of 2D/3D environment. Selection of drawing size and scale. Commands and creation of

Lines, Co-ordinate points, axes, poly-lines, square, rectangle, polygons, splines, circles, ellipse, text,

move, copy, off-set, mirror, rotate, trim, extend, break, chamfer, fillet, curves, constraints viz. tangency,parallelism, inclination and perpendicularity. Dimensioning, line conventions, material conventions and

lettering. 12 Hrs

2. Orthographic Projections

Introduction, Definitions - Planes of projection, reference line and conventions employed, Projections of

points in all the four quadrants, Projections of straight lines (located in First quadrant/first angle only),

True and apparent lengths, True and apparent inclinations to reference planes (No applicationproblems). 12 Hrs

3. Orthographic Projections of Plane Surfaces

(First Angle Projection Only)

Introduction, Definitionsprojections of plane surfacestriangle, square, rectangle, rhombus, pentagon,hexagon and circle, planes in different positions by change of position method only (No problems on

punched plates and composite plates). 12 Hrs

4. Projections of Solids (First Angle Projection Only)

Introduction, Definitions Projections of right regular tetrahedron, hexahedron (cube), prisms, pyramids,

cylinders and cones in different positions. (No problems on octahedrons and combination

solid) 24 Hrs

5. Sections And Development of Lateral Surfaces of Solids

Introduction, Section planes, Sections, Section views, Sectional views, Apparent shapes and True shapes

of Sections of right regular prisms, pyramids, cylinders and cones resting with base on HP. (No problems

on sections of solids)

Development of lateral surfaces of above solids, their frustums and truncations. (No problems on lateral

surfaces of trays, tetrahedrons, spheres and transition pieces). 12 Hrs

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6. Isometric Projection (Using Isometric Scale Only)

Introduction, Isometric scale, Isometric projection of simple plane figures, Isometric projection of

tetrahedron, hexahedron(cube), right regular prisms, pyramids, cylinders, cones, spheres, cut spheres and

combination of solids (Maximum of three solids). 12 Hrs

Text Books

1. Engineering Drawing - N.D. Bhatt & V.M. Panchal, 48 th edition, 2005-Charotar PublishingHouse, Gujarat.

2. A Primer on Computer Aided Engineering Drawing-2006, Published by VTU, Belgaum.Reference Books

1. Computer Aided Engineering Drawing - S. Trymbaka Murthy, -I.K. International PublishingHouse Pvt. Ltd., New Delhi, 3

rdrevised edition- 2006.

2. Engineering Graphics - K.R. Gopalakrishna, 32ndedition, 2005- Subash Publishers Bangalore.3. Fundamentals of Engineering Drawing with an Introduction to Interactive Computer Graphics

for Design and Production-Luzadder Warren J., Duff John M., Eastern Economy Edition,

2005-Prentice-Hall of India Pvt. Ltd., New Delhi.

Conducting classes

Classes may be conducted in two slots/ week of 3 hours each (Instruction 1 hr. +Sketching & Practice

2 hr.)

Scheme of Evaluation for Internal Assessment (25 Marks)

(a) 15 Marks for Class work (Sketching & Computer Aided Engineering drawing printouts in A4 size

sheets).

(b) 10 Marks for test in the same pattern as that of the main examination.(Better of the two Tests).

All the solutions must be valued on the spot by examining the sketches, display and the hard copies. All

the sketches including the computer printouts must be submitted and they must be preserved for one year.

Scheme of Examination

1. Chapter 1 is only for practice and Internal Assessment and not for examination.2. Separate Question paper must be set for each batch of students, jointly by the Internal & External

examiners.

3. A maximum of THREEquestions must be set as per the following pattern (No mixing of questions

from different Chapters).Q. No. From Chapters Marks Allotted

1 Chapter 2 or Chapter 3 30

2 Chapter 4 40

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3 Chapter 5 or Chapter 6 30

Total 100

Scheme of Evaluation

Q. No. Solutions & Sketching on graph

book

Computer display &

printoutTotal Marks

1 10 Marks 20 Marks 30



Total 40Marks 60 Marks 100

Students have to submit the computer printouts and the sketches drawn on the graph sheets at the end of

the examination. Both Internal & External examiners have to jointly evaluate the solutions (sketches) and

computer display & printouts of each student for 100 marks (40 marks for solutions & sketches + 60

marks for computer display and printouts) and submit the marks list along with the solution (sketches) on

graph sheets & computer printouts in separate covers.

4. Each batch must consist of a minimum of 10 students and a maximum of 12 students.

5. Examination can be conducted in parallel batches, if necessary.

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LESSON PLAN

Hour

NoTopics to be covered

01 Introduction to computer aided sketching- Drawing Instruments and their uses, BIS conventions,

Lettering, dimensioning and free hand practicing.

02 Computer screen, layout of the software-Solid Edge-standard tool bar-menu commonly used tool

03 Various Commands in Solid Edge- software

04 Orthographic projections-Planes of projection, reference line

Projection of points

05 Projection of points in all the four quadrants

Projection of lines

06 Projection of lines parallel to one plane and inclined to another plane

07 Projections of straight lines inclined to one plane and parallel to other plane

08 Projection of lines inclined in both the planes

Projection of plane surfaces

09 Orthographic projection of plane surface-projections of triangle, square, rectangle

10 Projections of pentagon, hexagon and circle

11 Projections of planes in different positions

Projection of solids

12 Projections of Prisms Square, pentagon, hexagon

13 Projections of Pyramids- Square, pentagon, hexagon14 Projections of solids-right regular tetrahedron ,hexahedron

15 Projections of Cylinders and Cones

Development of Surfaces

16 Section OF Solids-Introduction of Section Planes, Section views , Apparent shapes and true shapes

of section of right regular prisms

17 Section of pyramids

18 Section of cylinders

19 Section of cones resting with base on Hp

20 Development of Lateral surfaces of Solids

21 Development of Lateral surfaces of Frustums

22 Development of Lateral surfaces of TruncationsIsometric view

23 Isometric Projections-Isometric scale , Isometric Projection of simple plane figures

24 Isometric Projection of Tetrahedron, Hexahedron

25 Isometric Projection of Right regular Prisms and Pyramids

26 Isometric Projection of Cylinders, Cones

27 Isometric Projection of Spheres, Cut Spheres

28 Isometric Projection of Combination of Solids

29 Revision

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10 WSL 16/10 WSL 26 - WORKSHOP PRACTICE

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SYLLABUS

Sub Code : 10 WSL 16/10 WSL 26 IA Marks : 25

Hrs/ Week : 03 Exam Hours : 03

Total Hrs. : 42 Exam Marks : 50

1. Fitting

a. Study of fitting toolsb. Study of fitting operations & jointsc. Minimum 5 models involving rectangular, triangular, semi circular and dovetail joints.

2. Weldingd. Study of electric arc welding tools & equipmentse. Minimum 4 Models- electric arc welding-Butt joint, Lap joint, T-joint & L-joint.

3. Study and demonstration of Sheet metal and soldering work.

4. Study & demonstration of power Tools in Mechanical Engineering

Scheme of Examination:

Fitting 30 Marks

Welding 10 Marks

Viva Voce 10 Marks--------------

TOTAL 50 Marks

--------------

Reference Book:

1. The Elements of Workshop Technology -, Vol 1 & 2, S.K.H. Choudhury, A.K.H.Choudhury, Nirjhar

Roy, 11th

edition, 2001, Media Promoters and Publishers, Mumbai.

*****

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