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V.S.B. ENGINEERING COLLEGE, KARUR

Academic Year: 2016-2017 (EVEN Semester)

Department of Mechanical Engineering

Question Bank

S.No. Name of The Subject Semester Page No

1 Automobile Engineering VI 02

2 Design of Transmission Systems VI 06

3 Finite Element Analysis VI 14

4 Gas Dynamics and Jet Propulsion VI 31

5 Principles of Management VI 43

6 Unconventional Machining Process VI 48

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AUTOMOBILE ENGINEERING

PART A

UNIT-1

VEHICLE STRUCTURE AND ENGINE

1. Define Wheel Base And Wheel Track?

2. List out the components of an automobile?

3. List out the components of a Chassis?

4. What do you mean by chassis?

5. Give types of vehicle construction.

6. Classify Chassis.

7. What are the Functions of Frame?

8. What are the loads acting on the vehicle Frame?

9. What are the advantage & disadvantage of Unitary (or) Frameless

construction?

10. What is Sub frame? List out their advantages.

11. What are the materials used for construction of side members of chassis?

12. What are the materials used for construction of chassis brackets?

13. What are the cross sections used in frame construction?

14. Name different types of vehicle layouts.

15. Classify automobiles based on i) transmission ii)body style iii)drive.

16. How do you rectify frame defects?

17. List out resistance to vehicle motion.

18. Write function and construction materials for the followings.

a) Crank shaft

b) Connecting rod

c) Piston Ring

19. Write down manufacturing methods for the following engine components

a) Cylinder block

b) Cylinder head

c) Piston pin

d) Crank case

20. Classify automobiles based on i) transmission ii)body style iii)drive.

UNIT-2

ENGINE AUXILLARY SYSTEM

1. What is MPFI? Write short notes on it.

2. What is CRDI? Also write its merits.

3. What are the advantages of MPFI?

4. What are the drawbacks or Disadvantages of simple carburetor?

5. What is stoichiometric air fuel ratio?

6. Classify fuel injection systems in SI engines.

7. Classify fuel injection systems in CI engines.

8. What is the function of the injection pump?

9. What is the function of the injector or nozzle?

10. Name some sensors used in MPFI

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11. Name some sensors used in CRDI.

12. What are the functions of ECU in CRDI engine?

13. What are the demerits of MPFI?

14. Define unit injector.

15. What is the function of a) air filter b) fuel filter in fuel supply system?

16. What is the function of fuel feed pump In CI engines?

17. Name important components of MPFI systems

18. Name some important components in CRDI systems

19. What is the function of the ignition system?

20. What is firing order? Give examples for it.

21. What is the function of ignition coil, condenser and contact breaker?

22. What are the advantages of electronic ignition system?

23. Give types of ignition systems

24. What is turbo charging? Give its merits

UNIT-3

TRANSMISSION SYSYTEMS

1. What are the functions of clutch?

2. Classify clutches.

3. Give examples for friction lining materials.

4. What are merits and demerits of cone clutches?

5. What do you mean centrifugal clutch?

6. What do you mean semi centrifugal clutch?

7. What are the merits of multiple clutch?

8. Compare dry clutch and wet clutch?

9. Compare coil spring clutch with diaphragm spring clutch.

10. Classify gears boxes.

11. What are merits and demerits of constant mesh gear box?

12. What are merits and demerits of synchromesh gear box?

13. Define double-declutch?

14. Compare manual and automatic transmission?

15. Give types of gear shift mechanism?

16. Write short notes on interlock mechanism.

17. What are the advantages and disadvantages of fluid flywheel?

18. What is over drives? Give its merits.

19. Give functions of (a) Propeller shaft (b) Universal joints

20. Give functions of differential.

21. Classify rear axle and rear axle drives.

22. What are loads acting on rear axles?

23. Differentiate Hotchkiss drive &torque tube drive?

UNIT-4

STEERING, BRAKES AND SUSPENSION SYSTEMS

1. What is the function of steering system?

2. Give types of front axle and stub axle.

3. Define live axle and dead axle.

4. Define Camber, KPI (or) SAI and Caster.

5. Define toe in and toe out.

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6. Define combined angle and scrub radius.

7. What is centre point steering (or) perfect steering?

8. Give types of steering mechanism.

9. Give types of steering gear boxes.

10. Define slip angle.

11. Define under steering and over steering

12. What are the factors affecting under and over steer?

13. Give types of steering linkages.

14. What is the use of balls in recirculation ball type steering gear box?

15. Write short notes on power steering.

16. Give types of power steering

17. Compare hydraulic power steering and electric power steering:

18. Compare manual steering and power steering:

19. What is the function of the brake system?

20. What is brake fade?

21. What is stopping distance?

22. Compare disc brake and drum brake.

23. What are the merits and demerits of air brakes?

24. What is ABS? Give its functions.

25. What is TCS? Give its functions.

26. What is independent suspension system? Give it merits & demerits?

27. Classify front suspension system?

28. Classify rear suspension system.

29. What is damper (or) Shock absorber? Give its types.

30. Give types of springs used in suspension system.

UNIT-V

ALTERNATIVE ENERGY SOURCES

1. What is CNG? Give its chemical composition.

2. Why bigger tanks needed when CNG and LPG used as fuel?

3. List out important part of CNG conversion kit.

4. What is biodiesel?

5. What is B20 and B100 blends?

6. What is the impact of CNG and LPG in reduction of pollutants?

7. List out manufacturing methods of hydrogen

8. What are the important characteristics of CNG?

9. Give the types of electric vehicle layout.

10. What is fuel cell?

11. What is LPG? Give its chemical composition.

12. What is transesterification?

13. What are the sources of biodiesel?

14. What is gasohol?

15. Give methods of producing biodiesel.

16. Give important characteristics of LPG.

17. What are the feasible characteristics of LPG?

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18. Give types of fuel cells.

19. What are benefits using hydrogen as an engine fuel?

20. List out all alternative fuel for I.C engine.

21. What are the merits and demerits of electric vehicles?

22. What is hybrid vehicle? Give its types.

23. What are the merits and demerits of fuel cells?

24. What is fermentation?

25. Give advantage and disadvantage of biodiesel?

26. Give merits and demerits of bio ethanol.

27. List out merits and demerits of LPG.

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DESIGN OF TRANSMISSION SYSTEMS

UNIT- I DESIGN OF FLEXIBLE ELEMENTS

PART - A

1. Name the four types of belts used for transmission of power.

2. What is wiping? How it can be avoided in belt drive?

3. What are the materials used for V grooved pulleys?

4. When do you prefer a wire rope drive?

5. Write any four wire rope applications.

6. How are wire ropes designated?

7. List out the various stresses induced in the wire ropes.

8. While designing a wire rope drive, always, a larger sleeve diameter is

preferred justify the statement?

9. Give any three applications of chain drives?

10. What is backsliding in chain drives?

11 What is a V flat drive?

12 What do you mean by galling of roller chain?

13 What do you mean by chordal action of chain drive?

14 What is an offset in a roller chain?

15 What type of belt would you prefer if the center distance between the pulleys

is small?

16 Define creep and slip in belts.

17 Give some application of wire ropes

18 What do you understand by simplex, duplex and triplex chain?

19 Sketch and name the different type of compound wire ropes

20 Explain the term "Crowning of Pulley".

PART- B

11. (i) A V- belt drive is to transmit 15kW to a compressor. The motor runs at 1150

rpm and the compressor is to run at 400 rpm. Determine.1. Belt

specifications2.Number of belts (8)

(ii) If the mass of1m3 of leather is 1mg and the stress in the belt is not to exceed

2.75 Mpa, find the maximum power that can be transmitted and the corresponding

speed of the belt. (8)

12. It is required to select a flat belt drive for a fan running at 360rpm.which is driven

by a 10kw, 1440rpm motor. The belt drive is open type and space available for a

center distance of 2m approximately. The diameter of a driven pulley is 1000mm.

(16)

13. Design a belt drive to transmit20 KW at 720 RPM aluminum rolling machine, the

speed ratio being 3. The distance between the pulley is3m.diameter of rolling

machine pulley is 1.2m. (16)

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14 A truck equipped with a 9.5 KW engine uses a roller chain as the final drive to the

rear axle.The driving sprocket runs at 900 rpm and driven sprocket at 400rpm with

center distance of approximately 600mm.Select the roller chain. (16)

15 A crane is lifting a load of 18 KN through a wire rope and a hook. The weight of

the hook etc, is 10KN. The load is to be lifted with an acceleration of 1m/sec2.

Calculate the diameter of the wire rope. The rope diameter may be taken as 30 times

the diameter of the rope. Take a factor of safety of 6 and Young‟s modulus for the

wire rope 0.8 x 105 N/mm

2. The ultimate stress may be taken as 1800 N/mm

2. The

cross-sectional area of the wire rope may be taken as 0.38 times the square of the wire

rope diameter. (16)

16 Design a chain drive to actuate a compressor from 15KW electric motor running at

1000 rpm, the compressor speed being 350 rpm. The minimum centre distance is 500

mm. the compressor operates 15 hours per day. The chain tension may be adjusted by

shifting the motor (16)

17 Design a chain drive to actuate a compressor from a 12 kW electric motor at 900

rpm, the compressor begins 250 rpm. Minimum centre distance should be 500mm;

the chain tension may be adjusted by shifting the motor on rails. The compressor is to

work 8 hour/day. (16)

18 A 15 kW squirrel cage motor, 1250 rpm is driving a centrifugal pump at 550 rpm.

The centrifugal pump is located at 700 mm form the motor. Design a chain drive. (16)

19 A crane is lifting a load of 25 KN through a wire rope and a hook. The weight of

the hook etc, is 15kN. The load is to be lifted with an acceleration of 1m/sec2. Design

the rope drive. (16)

20 Design a V-belt drive and calculate the actual belt tension and average stress for

the following data. Driven pulley diameter, D= 500 mm, driver pulley diameter,

d=150 mm, center distance c=925 mm, speed N1 = 1000 rpm, N2 = 300 rpm and

power, P = 7.5 kW. (16)

UNIT- II SPUR GEARS AND PARALLEL AXIS HELICAL GEARS

PART - A

1. Define module?

2. What are the advantages of toothed gears over the types of transmission system?

3. In a pair of spur gears the module is 6mm.Determine the circular pitch and the

diametral pitch?

4. What are the standard interchangeable tooth profiles?

5. Why is pinion made harder than gear?

6. What are the main types of gear tooth failure?

7. What are the assumptions made in deriving lewis equation?

8. When do you use non-metallic gears?

9. Define pitch circle with reference to spur gears?

10. What are the common forms of fear tooth profile?

11 Define transmission ratio with reference to spur gears?

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12 Back lash for spur gears depends on which two factors?

13 What is the non metallic‟s used as gears?

14 When do you prefer helical gears than spur gears?

15 What is the major disadvantage of single helical gear? How can you overcome that

difficulty?

16 What hands of helix are used in parallel helical gears?

17 Define axial pitch of a helical gear?

18 Why is the crossed helical gear drive mostly not used for power transmission?

19 What is Herringbone gear? State its application.

20 Where do we use skew gears?

PART- B

11. (i) A pinion with 25 teeth and rotating at 1200rpm drives a gear which rotates at

200rpm and module is 4mm.calculate the center distance between the gears. (8)

(ii) A helical gear with 300 helix angle has to transmit 35kW at 1500 rpm. With a

speed reduction ratio 2.5. If the pinion has 24 teeth, determine the necessary

module for 200 full depths the teeth. Assume 15Ni 2Cr 1 Mo 15 material for both

pinion and wheel. (8)

12. Design a spur gear drive required to transmit 45 KW at pinion speed of 800 rpm.

The velocity ratio 3.5:1. The teeth are 20 full depths involute with 18 teeth on the

pinion. Both the pinion gear are made of steel with a maximum safe static stress

of 180N / mm2 (16)

13. Design a pair of helical gears to transmit 30kW power at a speed reduction ratio

of 4:1. The input shaft rotates at 2000 rpm. Take helix and pressure angles equal

to 250 and 200 respectively. The number of teeth on the pinion may be taken as

30 (16)

14 Design a straight spur gear drive to transmit 8 kW. The pinion speed is 720 rpm

and the speed ratio is 2. Both the gears are made of the same surface hardened

carbon steel with 55RC and core hardness less than 350 BHN. Ultimate strength

is 720 N/mm2 and yield strength is 360 N/ mm2(16)

15 A motor shaft rotating at 1500 rpm has to transmit 15kW to a low speed shaft

with a speed reduction of 3:1. Assume starting torque to be 25% higher than the

running torque. The teeth are 200 involutes with 25 teeth on the pinion. Both the

pinion and gear are made of C45 steel. Design a spur gear drive to suit the above

conditions and check for compressive and bending stresses and plastic

deformations. Also sketch the spur gear drive. (16)

16 An electric motor is to be connected to a reciprocating pump through a gear pair.

The gears are overhanging in their shafts. Motor speed = 1440 rpm. Speed

reduction ratio = 5. Motor power = 36.8 kW. The gears are to have 200 pressure

angles. Design a spur gear drive. (16)

17 A pair of helical gears subjected to moderate shock loading is to transmit 37.5kW

at 1750 r.p.m. of the pinion. The speed reduction ratio is 4.25 and the helix angle

is 150. The service is continuous and the teeth are 200 FD in the normal plane.

Design the gears, assuming a life of 10,000 hours. (16)

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18. A compressor running at 300 rpm is driven by a15 KW, 1200 rpm motor through

a 14½ full depth spur gears .The centre distance is 375 mm .The motor pinion is

to be of C30 forged steel hardened and tempered, and the driven gear is to be of

cast iron. Assuming medium shock condition, design the gear drive. (16)

19. Design a spur gear drive required to transmit 15 KW at pinion speed of 1400 rpm

to a low speed shaft rotating at 500 rpm. The teeth are 20 degree full depth

involute with 25 teeth on the pinion. Both the pinion and gear are made of CI with

a maximum safe static stress of 56 N / mm2. (16)

20. A helical gear drive with the helix angle of 30 degree required to transmit 15 KW

at pinion speed of 10000 rpm. The velocity ratio 4:1 The teeth are 20 degree full

depth involute with 25 teeth on the pinion. Both the pinion gear is made of

hardened steel with a maximum safe static stress of 100N / mm2. The face width

may be taken as 14 times the module. Find the module and face width. (16)

UNIT III BEVEL, WORM AND CROSS HELICAL GEARS

PART – A

1. What are the materials used for worm and worm gear?

2. Define normal pitch of a worm gear?

3. What is irreversibility in worm gears?

4. Where do we use worm gears?

5. Under what situation, worm gears are used?

6. For bevel gears, define back cone distance?

7. Under what situation, bevel gears are used?

8. Differentiate a straight bevel gear and spiral bevel gear?

9. What are the advantages of spiral bevel gears over straight bevel gears?

10. What a is zero bevel gear?

11 What is the difference between an angular gear and a miter gear?

12 What are the applications of worm and worm gear?

13 Why is the non ferrous material used for worm wheel?

14 Specify the conditions based on which gear cutters are selected.

15. Why is duodenum value more than addendum value?

16. What is working depth of a gear-tooth ?

17. What factors influence backlash in gear drives?

18. Where do we use skew helical gears?

19. What is interference in Involute profile?

20. How number of teeth affects the design of gears?

21. What are the advantages of the helical gear over spur gear?

22. State the law of Gearing.

23. What is pressure angle? What is the effect of increase in pressure angle?

PART- B

11. A 10 kW motor running at 1200 rpm drives a compressor at 780 rpm through a

900 bevel gearing arrangement. The pinion has 30 teeth. The pressure angle of the

teeth is 200. Both the pinion and gear are made of heat treated cast iron grade 35.

Determine the cone distance, average module and face width of the gears. (16)

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12. Design a pair of bevel gears for two shafts whose axes are at right angles. The

power transmitted is 25kW. The speed of the pinion is 300 rpm and the gear is

120 rpm. (16)

13. A 2 kW power is applied to a worm shaft at 720 rpm. The worm is of quadruple

start with 50mm as pitch circle diameter. The worm is of quadruple start type with

50mm as pitch circle diameter. The worm gear has 40 teeth with 5mm module.

The pressure angle in the diametral plane is 200. Determine (i) the lead angle of

the worm, (ii) velocity ratio, and (ii) centre distance. Also, calculate efficiency of

the worm gear drive, and power lost in friction (16)

14 A pair of straight tooth bevel gears has a velocity ratio of 4/3. The pitch diameter

of the pinion is 150 mm. The face width is 50mm. The pinion rotates at 240

rev/min. The teeth are 5mm module, 14 10 involutes. If 6 kW is transmitted,

determine (i) the tangential force at the Mean radius (ii) the pinion thrust force

(iii) the gear thrust force. Draw the free body diagrams indicating the forces (16)

15 Design a worm gear drive with a standard centre distance to transmit 7.5 kW from

a warm rotating at 1440 rpm to a warm wheel at 20 rpm (16)

16 Design the teeth of a pair of bevel gears to transmit 18.75 kW at 600 rpm of

thepinion. The velocity ratio should be about 3 and the pinion should have about

20 teeth which are full depth 200 involutes. Find the module, face width, diameter

of the gears and pitch core angle for both gears (16)

17 A 900 degree straight bevel gear set is needed to give a 3:1 reduction. Determine

the pitch cone angle, pitch diameter, and gear forces if the, 25 degree pressure

angle pinion ahs 15 teeth of pitch circle diameter, 4, and the transmitted power is

8 HP at 550 pinion rpm (16)

18 Design a worm gear drive to transmit 22.5 kW at a worm speed of 1440 rpm.

Velocity ratio is 24:1. An efficiency of at least 85% is desired. The temperature

rise should be restricted to 400 C. Determine the required cooling area (16)

19 A speed reducer wait is to be designed for an input of 11.25kW with a

transmission ratio of 20. The speed of the hardened steel worm is 1500 rpm. The

worm wheel is to be made of bronze. The tooth form is to be 200 in volute (16)

20 Design a bevel gear drive to transmit 3.5 kW with the following specifications:

speed ratio = 4; driving shaft speed = 200 r.p.m.; drive is non-reversible; material

for pinion is steel; material for wheel is cast iron; and life 25000 hours (16)

UNIT IV

GEAR BOXES

PART – A

1. Write any two requirements of a speed gear box?

2. Why G.P. series is selected for arranging the speeds in gear box?

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3. List any two methods used for changing speeds in gear box?

4. What are preferred numbers?

5. What is step ratio? Or Define progression ratio?

6. What is kinematic arrangement, as applied to gear boxes?

7. What does the ray-diagram of gear box indicate?

8. State any three basic rules to be followed while designing a gear box?

9. What are the possible arrangements to achier 12 speeds from a gear box?

10. What is a speed reducer?

11 What are the main applications of gear box?

12 What are the main functions of gear box cover?

13 List out the possible arrangement to achieve 16 speed gear box?

14 What is the function of spacers in a gear-box?

15 What are the methods of lubrication in speed reducers?

16 What is the function of spacers in a gear-box?

17 What is step ratio? Name the series in which speeds of multi-speed gear box are

arranged.

18Give some applications of constant mesh gear box.

19 What Is Sliding Mesh Gear Box?

20. What Is constant Mesh Gear Box.

PART- B

11.(i) The maximum and minimum speeds of a 6 speed gear box are to be 1600 rpm and

500 rpm respectively. Construct the speed diagram and the kinematic arrangement of the

gearbox. (8)

(ii) Design a gearbox, for the following data:

No of speeds required=16; min speed=100rpm; max speed=560rpm;

Draw diagram and kinematic arrangement. (8)

12. Design a 12 speed gearbox

The speed range required is 100 to 355rpm

a) Draw the ray diagram,

b) Draw the kinematic arrangement

c) Calculate the no of teeth on each gear. (16)

13. A gearbox is to give 18 speeds for a spindle of a milling machine. The drive is from

an electric motor of 3.75KW at 1440rpm. Maximum and minimum speeds of the spindle

are to be around 650rpm and 35rpm respectively. Find the speed ratios which will give

the desired speeds and draw the structural diagram and kinematic arrangement of the

drive. (16)

14. Design a nine speed gear box for a milling machine with speed ranging from 56-900

rpm. The output speed is 720 rpm; make a neat sketch of the gearbox. Indicate the no of

teeth on all the gears and their speeds. (16)

15.The minimum and maximum speeds of a six speed box are to be 160 and 1500 rpm.

Construct the kinematic arrangement and the ray diagram of the gearbox and also

calculate the no of teeth of all gears (16)

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16. A gearbox is to be designed to provide 12 output speeds ranging from 160 to 200

rpm. The input speed of motor is 1600 rpm. Choosing a standard speed ratio construct the

speed diagram and the kinematic arrangement calculate the no of teeth of all gears (16)

17. A six speed gear box is required to provide output speeds in the range of 125 to 400

rpm. With a step ratio of 1.25 and transmit a power of 5 KW at 710 rpm. Draw the speed

diagram and also the Determine the number of teeth module and face width of all gears,

assuming suitable materials for the gears. Determine the length of the gear box along the

axis of the gear shaft. (16)

18. A machine tool gear box is to have 9 speeds. The gear box is driven by an electric

motor whose shaft rotational speed is 1400 rpm. The gear box is connected to the

motor by a belt drive. The maximum and minimum speeds required at the gear

box output are 1000 rpm. and also the Suitable speed reduction can also be

provided in the belt drive. What is the step ratio and what are the values of 9

speeds? Sketch the arrangement. Obtain the number of teeth on each gear and also

the actual output speeds. (16)

19. Design a 9 speed gear box for a machine to provide speeds ranging from 200 rpm

to 1000 rpm. The input is from a motor of 5 KW at 1440 rpm. Assume any alloy

steel for the gear. (16)

20. In a milling machine, 18 different speeds in the range of 35 rpm and 650 rpm are

required. Design a three stage gear box with a standard step ratio. Sketch the

layout of the gear box, indicating the number of teeth n each gear. The gear box

receives 3.6 kW from an electric motor running at 1,440 rpm. Sketch also the

speed diagram. (16)

UNIT V

CAMS, CLUTCHES AND BRAKES

PART - A

1. How do you classify the cams?

2. What are the disadvantages of knife-edge follower?

3. What are the different types of follower motions?

4. What is the function of a clutch?

5. Give examples for axial and radial friction clutch?

6. What are the properties required of the material used as a friction surface?

7. Name few commonly used friction materials?

8. Clutches are usually designed on the basic of uniform wear, why?

9. Distinguish between dry and wet operation of clutches?

10. In case clutch semi-cone angle should be greater than 12˚ why?

11 What is the difference between cone and centrifugal clutches?

12 Compare disc clutches and cone clutches?

13 Given the reaction to find temperature rise in clutches? 14 What is the friction of a

brake?

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15 Differentiate a brake and a clutch?

16 What is a self locking brake?

17 What do you mean by self energizing brakes?

18 Name the profile of cam that gives no jerk.

19Give the reason for left and right shoes of the internal expansion brakes having,

different actuating forces.

20 If a multidisc clutch has 8 discs in driving shaft and 9 discs in driven shaft, then how

many number of contact surfaces it will have?

PART -B

11. A single plate clutch, both side being effective is required to connect a machine

shaft to a driver shaft which runs at 500rpm .The moment of inertia of the rotating

parts of the machine is 1Kgm2.The inner and the outer radii of the friction discs

are 50mm&100mm respectively Assuming uniform pressure of 0.1N/mm2 and µ

=0.25 , determine the time taken for the machine to reach full speed when the

clutch is suddenly engaged . Also determine the power transmitted by the clutch,

the energy dissipated during the clutch slip and the energy supplied to the

machine during engagement. (16)

12. A multi – disk clutch consists of five steel plates and four bronze plates. The inner

and outer diameters of friction disks are 75mm and 150mm respectively. The

coefficient of friction is 0.1 and the intensity of pressure is limited to 0.3 N/mm2.

Assuming the uniform wear theory, calculate (i) the required operating force, and

(ii) power transmitting capacity at 750 rpm. (16)

14. In an automotive type internal – expanding double – shoe brake he face width of the

friction lining is 40 mm and the intensity of normal pressure is limited to 1 N/mm2 . The

coefficient of friction is 0.32. The angle φ1 can be assumed to be zero. Calculate (i) the

actuating force P, and (ii) the torque – absorbing capacity of the brake. (16)

15.A leather faced conical clutch has cone angle of 300.The pressure between the contact

surfaces is limited to .35N/mm2 and the breath of the conical surface is not to exceed 1/3

of the mean radius. Find the dimensions of the contact surface to transmit 22Kw at 2000

rpm .Also calculate the force required to engage the clutch. .Take µ =0.15 (16)

16. Draw the displace time , velocity time and the acceleration time curves for the

follower in order to satisfy the following conditions

(1) Stroke of the follower 25mm

(2) Outstroke takes place with SHM during 900 of cam rotation

(3) Return stroke takes with SHM during 750 of cam rotation

(4) Cam rotates with a uniform speed of 800 rpm (16)

17. A radial cam rotates at 1200 rpm with the follower rising 20mm with SHM in1500of

the cam rotation .The roller is 32mm in diameter and the prime circle is 80mm in

diameter. Check whether undercutting will occur. (16)

18.A multi – disk clutch has 3 disks on the driving shaft and two on the driven shaft. The

inner and outer diameters of friction disks are 120mm and 240mm respectively. The

coefficients of friction is 0.3 and find the max axial intensity of pressure between the

discs for transmitting 25 kW at 1575 rpm .Assuming the uniform wear theory. (16)

19.A single plate clutch transmits 25 kW at 900 rpm. The max. Pressure intensity

between the plates is 85KN/m2 The ratio of radii is 1.25. Both the sides of the plate are

effective and the coefficient of friction is .25. Determine (i) the diameter of the plate (ii)

the axial force to engage the clutch. Assuming the uniform wear theory.

(i) What is a self energizing brake? When a brake becomes self-locking?(8)

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(ii) What is positive clutch? Describe the types. (8)

20.In a band and block brake, the band is lined with 14 blocks, each of which subtends an

angle of 20degrees at the drum centre. One end of band is attached to the function of the

brake lever and the other to a pin 150mm from the fulcrum. Find the force required at the

end of the lever 1 m long from the fulcrum to give a torque of 4kN-m. The diameter of

the brake drum is 1m and the co-efficient of friction between the blocks and the drum is

0.25. (16)

ME 6603 –FINITE ELEMENT ANALYSIS

PART A & B QUESTIONS

UNIT I - INTRODUCTION

PART-A

1. Distinguish between Error and Residual.

2. Discuss the finite element method work.

3. List any four advantages of finite element method.

4. List out the types of nodes.

5. List any four advantages of weak formulation?

6. Compare the Ritz technique with the nodal approximation method.

7. How to develop the equilibrium equation for a finite element?

8. Classify boundary conditions

9. List the various method of solving boundary value problems.

10. Formulate the boundary conditions of a cantilever beam AB of span L fixed at A and free

at B subjected to a uniformly distributed load of P throughout the span.

11. Name the weighted residual methods.

12. How will you identify types of Eigen Value Problems?

13. Explain weak formulation of FEA

14. Why are polynomial types of interpolation function recommended over trigonometric

function?

15. What should be considered during piecewise trial function?

16. How will you develop total potential energy of a structural system?

17. Explain the principle of minimum potential energy.

18. Differentiate between initial value problem and boundary value problem?

19. List out the advantages of finite element method over other numerical analysis method.

20. Define node or joint.

PART-B

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1. Explain the step by step procedure of FEA. (BT 4)

2. Explain the process of discretization of a structure in finite element

method in detail, with suitable illustration for each aspect being and

discussed. (BT 3)

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3. A uniform rod subjected to a uniform axial load is illustrated in figure, the

deformation of the bar is governed by the differential equation given below.

Determine the displacement by applying Weighted Residual Method (WRM)

(BT3)

4. Find the approximate deflection of a simply supported beam under a

uniformly distributed load „P‟ throughout its span. By applying Galerking and

Least Square Residual Method (BT3)

5. Solve the differential equation for a physical problem expressed as d2y/dx2 +

100 = 0,

0≤x≤10 with boundary conditions as y(0)=0 and y(10)=0 using (i) Point collocation method (ii)

Sub domain collocation method (iii) Least square method and (iv) Galerkin method (BT3)

6. Develop the characteristic equations for the one dimensional bar element by

using piece-wise defined interpolations and weak form of the weighted

residual method? (BT6)

7. A simple supported beam subjected to uniformly distributed load over entire

span and it is subjected to a point load at the centre of the span. Calculate the

deflection uing Rayleigh-Ritz method and compare with exact solutions.

(BT3)

8. Calculate the value of central deflection in the figure below by

assuming Y = a sin πx/L the beam is uniform throughout and carries and

central point load P.(BT3)

9. Determine the expression for deflection and bending moment in a simply

supported beam subjected to uniformly distributed load over entire span. Find

the deflection and moment at mid span and compare with exact solution

Rayleigh-Ritz method. Use

(BT5)

17

10. A simply supported beam carries uniformly distributed load over the entire

span. Calculate the bending moment and deflection. Assume EI is constant

and compare the results with other solution. (BT5)

18

UNIT II - ONE-DIMENSIONAL PROBLEMS

PART-A

1. What are the types of problems consider as one dimensional problem?

2. Define shape function.

3. illustrate shape function of a two node line element

4. List out the stiffness matrix properties.

5. Describe the characteristics of shape functions

6. Differential global and local coordinate.

7. Express the element stiffness matrix of a truss element

8. illustrate a typical truss element shown local global transformation

9. Define natural coordinate system

10. List the types of dynamic analysis problems

11. Define Lumped mass matrix?

12. Define mode superposition technique?

13. Formulate the lumped mass matrix for the truss element.

14. Assess the accuracy of the values of natural frequencies obtained by using lumped mass

matrices and consistent mass matrices.

15. Determine the element mass matrix for one-dimensional dynamic structural analysis

problems. Assume the two-node, linear element.

16. Write down the Governing equation and for 1D longitudinal vibration of a bar fixed at

one end and create the boundary conditions

17. Explain the transverse vibration?

18. Compare primary nodes and secondary nodes?

19. Show that the global stiffness matrix is differed from element stiffness matrix?

20. Classify some of the structural problems.

PART-B

1. Develop the Shape function, Stiffness matrix and force vector for one dimensional linear

element. (BT6)

2. Consider a bar as shown in fig. Young‟s Modulus E= 2 x 105 N/mm2. A1 = 2cm2,

A2 = 1cm2 and force of 100N. Calculate the nodal displacement (BT3)

19

3. Consider the bar shown in figure axial force P = 30KN is applied as shown.

Determine the nodal displacement, stresses in each element and reaction

forces.(BT5)

4. Axial load of 500N is applied to a stepped shaft, at the interface of two bars. The

ends are fixed. Calculate the nodal displacement and stress when the element is

subjected to all in temperature of 100˚C. Take E1 = 30 x103 N/mm2&E2 = 200 x

103 N/mm2, A1=900 mm2 & A2 = 1200mm2, α1 = 23x10-6 /˚C & α2 = 11.7x10-

6/˚C, L1=200mm & L2 =300mm. (BT3)

5. The loading and other parameters for a two bar truss element is shown in figure.

Calculate (i) The element stiffness matrix for each element (ii) Global stiffness

matrix

(iii) Nodal displacements (iv) Reaction force (v) The stresses induced in the elements. Assume

E=200GPa. (BT3)

6. Figure shown a typical continuous beam. We wish to obtain the deflection of the

beam using the beam element just described. For simplicity we assume EI=1 (BT1)

20

7. Find the natural frequencies of transverse vibrations of the cantilever beam shown in

figure by applying one 1D beam element (BT3)

8. Calculate the displacements and slopes at the nodes for the beam shown in figure.

Find the moment at the midpoint of element 1 (BT3)

9. For the beam and loading as shown in figure. Calculate the slopes at nodes 2 and 3

and the vertical deflection at the mid-point of the distributed load. Take E=200 GPa

and I=4x10-6 m4 (BT3)

10. Calculate the force in the members of the truss as shown in fig. Take E=200 GPa.

(BT3)

21

22

UNIT III -TWO DIMENSIONAL SCALAR VARIABLE PROBLEMS

PART-A

1. Define two-dimensional scalar variable problem.

2. How will you modify a three-dimensional problem to a Tow-dimensional problem?

3. List out the application of two-dimensional problems.

4. Express the shape functions associated with the tree noded linear triangular element and

plot the variation of the same.

5. Why a CST element so called?

6. How do you define two dimensional elements?

7. Explain QST (Quadratic strain Triangle) element?

8. With suitable examples and the governing equation distinguish between vector and scalar

variable problems.

9. Formulate the (B) matrix for CST element.

10. Express the interpolation function of a field variable for three-node triangular element

11. List out the CST and LST elements.

12. illustrate the shape function of a CST element.

13. Define LST element.

14. Express the nodal displacement equation for a two dimensional triangular elasticity

element

15. Show the transformation for mapping x-coordinate system into a natural coordinate

system for a linear spar element and for a quadratic spar element.

16. What do you understand by area coordinates?

17. Define Isoperimetric elements with suitable examples

18. Explain shape function of four node quadrilateral elements.

19. Explain geometric Isotropy.

20. Write the Lagrange shape functions for a 1D, 2noded elements.

PART-B

1. Develop the element strain displacement matrix and element stiffness matrix of a CST

element (BT6)

2. Determine the shape functions for a constant strain triangular (CST) element. (BT3)

3. The (x, y) coordinate of nodes i, j, and k of triangular elements are given by (0, 0), (3,

0) and (1.5, 4) mm respectively. Evaluate the shape functions N1, N2 and N3 at an interior point P (2,

2.5) mm for the element. For the same triangular element, obtain the strain-displacement relation matrix

B. (BT5)

4. Calculate the value of pressure at the point A which is inside the 3 noded triangular element

as shown in fig. The nodal values are Φ1 = 40 MPa, Φ 2 = 34 MPa and

23

Φ 3 = 46 MPa. point A is located at (2, 1.5). Assume the pressure is linearly varying in the

element. Also determine the location of 42 MPa contour line. (BT3)

(0, 0) 1

3 (2, 5)

(2, 1.5)

(4, 0.5)

5. Find the temperature at point (1, 1.5) inside a triangular element shown with nodal

temperature given as Ti = 40˚C, Tj = 34˚C and Tk = 46˚C. Also Calculate the

location of the 42˚C contour line for triangular element shown in fig. (BT3)

6. Calculate the element stiffness matrix and thermal force vector for the plane stress

element shown in fig. The element experiences a rise of 10˚C (BT3)

7. For a 4-noded rectangular element shown in fig. Calculate the temperature point (7,

4). The nodal values of the temperatures are T1 = 42˚C, T2 = 54˚C and T3 = 56˚C

and T4 = 46˚C. Also determine 3 point on the 50˚C contour line. (BT3)

24

(2, 2)

8. A 3 noded triangular element as shown in fig Calculate the temperature at the point P

(4, 3), given that the temperatures at nodes 1, 2 and 3 are 75˚C, 90˚C and 60˚C

respectively. (BT3)

3 (3, 6)

(7, 4)

9. Develop the shape function derivation for a two-dimensional quadratic element.

(BT6)

10. Evaluate the partial derivatives of the shape function at ζ = 1/2, η= ½ of a

quadrilateral element, assuming that the temperature is approximated by bilinear.

(BT5)

25

UNIT IV - TWO DIMENSIONAL VECTOR VARIABLE PROBLEMS

PART-A

1. Define 2D vector variable problems?

2. What problems are considered as 2D vector variable problems?

3. List out the various elasticity equations.

4. Define plane stress and plane strain.

5. Discuss „Principal stresses”.

6. Discuss the difference between the use of linear triangular elements and bilinear

rectangular elements for a 2D domain.

7. Define axisymmetric solid?

8. Distinguish between plane stress, plane strain and axisymmetric analysis in solid

mechanics.

9. Specify the machine component related with axisymmetric concept.

10. Discuss axisymmetric formulation.

11. Develop the Shape functions for axisymmetric triangular elements

12. Explain about finite element modeling for axisymmetric solid.

13. Develop the Strain-Displacement matrix for axisymmetric solid

14. Write down Stress-Strain displacement matrix for axisymmetric solid

15. Write down Stiffness matrix for axisymmetric solid

16. Explain plane stress conditions.

17. Explain constitutive relationship for the plane stress problems.

18. State whether plane stress or plane strain elements can be used to model the following

structures. Explain your answer.

a. A wall subjected to wind load

b. A wrench subjected to a force in the plane of the wrench.

19. Define a plane strain with suitable example.

20. Define a plane stress problem with a suitable example.

26

PART-B

1. Develop elasticity equation for 2D element (BT6)

2. Develop shape function for axisymmetric triangular elements (BT6)

3. Develop Stress-Strain relationship matrix for axisymmetric triangular element (BT6)

4. Develop Strain-Displacement matrix for axisymmetric triangular element (BT6)

5. Calculate the global stiffness matrix for the plate shown in fig. Taking two triangular

elements. Assume plane stress conditions (BT3)

6. Calculate the stiffness matrix for the axisymmetric element shown in fig E= 2.1 x 106

N/mm2 and Poisson‟s ratio as 0.3 (BT3)

7. Calculate the element strains for an axisymmetric triangular element shown in fig the

nodal displacement are. u1= 0.001, u2 = 0.002, u3 = -0.003, w1 = 0.002, w2 = 0.001

and w3 = 0.004 all dimensions are in mm. (BT3)

8. For an axisymmetric triangular elements as shown in fig. Evaluate the stiffness matrix.

Take modulus of elasticity E = 210 GPa. Poisson‟s ratio = 0.25. the coordinates are

given in millimetres. (BT5)

27

9. The nodal coordinates for an axisymmetric triangular element shown in fig are given

below. Calculate the strain-displacement matrix for that element (BT3)

10. A long hollow cylinder of inside diameter 100mm and outside diameter 120mm is

firmly fitted in a hole of another rigid cylinder over its full length as shown in fig. The

cylinder is then subjected to an internal pressure of 2 MPa. By using two element on

the 10mm length shown calculate the displacements at the inner radius tame E = 210

GPa. μ = 0.3 (BT3)

28

UNIT V - ISOPARAMETRIC FORMULATION

PART-A

1. Define Isoparametric element?

2. Differentiate between Isoparametric, super parametric and sub-parametric elements.

3. Define Isoparametric formulation?

4. Explain the Jacobian transformation?

5. Give the shape functions for a four-noded linear quadrilateral element in natural

coordinates.

6. Describe the Jacobian of transformation for two-noded Isoparametric element.

7. List out the advantages of Gauss quadrature numerical integration for Isoparametric

element?

8. Discuss about higher order element.

9. Discuss about Numerical integration

10. Discuss about Gauss-quadrature method.

11. Differentiate between implicitly and explicitly methods of numerical integration

12. Differentiate between geometric and material non-linearity.

13. List out the significance of Jacobian transformation?

14. Define Isoparametric element with suitable examples.

15. Develop Stress- displacement matrix for Four noded quadrilateral element using natural

coordinates.

16 Develop Stiffness matrix for Isoparametric quadrilateral element

17. Define Newton cotes quadrature method

18. Distinguish between trapezoidal rule and Simpson‟s rule

19. Distinguish between trapezoidal rule and Gauss quadrature.

20.Explain the transformation for mapping x-coordinate system into a natural coordinate

system for a linear spar element and for a quadratic spar element.

PART-B

1. Develop the shape functions for a four-noded Isoparametric quadrilateral element. (BT6)

2. Develop Strain-Displacement matrix, Stress-Strain relationship matrix and Stiffness matrix

for Isoparametric quadrilateral element(BT6)

29

3. Calculate the Cartesian coordinates of the point P which has local coordinates ε = 0.8

and η = 0.6 as shown in figure (BT3)

4. For the four noded quadrilateral element shown in fig determine the Jacobian and

evaluate its value at the point (1/2, ½) (BT5)

5. Evaluate the Jacobian matrix at the local coordinates ε=η= 0.5 for the linear

quadrilateral element with its global coordinates as shown in fig. Also evaluate the

strain-displacement matrix. (BT5)

6. For a four noded rectangular element shown in fig Calculate the following

a. Jacobian matrix b. Strain-Displacement matrix c. Element strain and d. Element

stress. (BT3)

30

7. Find the integral I= using Gaussian quadrature method with 2

point scheme. The Gauss points are ±0.5774 and the weight at the two points are equal to

unity. (BT3)

8. Evaluate the integral (BT5)

9. Evaluate the integral I= using three point

Gauss integration. (BT5)

10. For the element shown in fig. Calculate the Jacobian matrix. (BT3)

31

GAS DYNAMICS AND JET PROPULSION

32

33

34

35

36

37

38

39

40

41

42

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PRINCIPLES OF MANAGEMENT QUESTION BANK

UNIT 1

PART-A (2 Marks)

1. Define Management.

2. What is globalisation?

3. What are the functions of Managers?

4. Write the different levels of Management.

5. What is meant by scientific management?

6. What are the effective characteristics of Managers?

7. Define Organization.

8. Define effectiveness.

9. Define efficiency.

10. Who is known as father of modern management theory?

11. Define Administration.

12. Distinguish between Management and Administration.

13. Write some characteristics of Management.

14. What are stages in evolution of management thought?

15. Define the term scalar chain.

16. What are the roles of management in organization?

17. What is time study and is motion study?

18. What is Espirit de corps?

19. What is systems approach to Management?

20. What are the roles of managers?

PART-B (16 Marks)

1. Explain briefly about the various functions of Management. Explain the three levels of

management.

2. What are the Henry Fayol‟s 14 principles of management or theory on administrative

management?

3. Explain briefly about the different factors affecting the organizational environment.

4. Explain the different schools of management. Discuss the contribution of human behaviour

school.

5. i) Define Management . What is meant by management process? ii) Management: Science

or Art – Discuss.

6.i ) Explain about the various views on management and administration ii)Compare

Management and administration.

7. Explain in detail about the contributions of Hawthorne experiments towards the

development of management thought.

8. i)Write the characteristics and limitations of classical approach. ii)Compare and contrast

Systems approach and contingency approach.

9.(i)What are the different managerial skills in organisation hierarchy? Explain. (ii)What are

the types of managerial attitude towards operations of MNC?

10. (i)Discuss the trends and challenges of management in global scenario. (ii) Discuss the

effects of globalisation & liberalization in improving organizational growth.

44

UNIT 2

PART-A (2 Marks)

1. Define planning. Distinguish strategic and tactical planning.

2. Define strategies.

3. Define objectives and goals.

4. What are the different types of plans?

5. What is meant by policies? Classify them.

6. What is the importance of setting organizational objectives in a modern complex

organisation?

7. Define MBO. Mention any four features of MBO.

8. Define Programs.

9. Define SWOT analysis and TOWS matrix.

10. What do you understand by decision making?

11. Mention the various types of forecasting techniques.

12. What is decision tree?

13. Explain the Delphi Technique.

14. List any four quantitative techniques in forecasting?

15. Mention the characteristics of sound policy.

16. What are the Objectives of planning?

17. Mention the Characteristics of „Programmed‟ and „Non-Programmed‟ decisions.

18. Define planning premises.

19. What is the importance of setting organisational objectives in a modern complex

organisation ?

20. What are the benefits of Management by Objectives?

PART-B (16 Marks)

1. Explain the overall decision making process. Explain the process followed in normal

situation.

2. Explain the various decision making techniques and the factors influencing it.

3. Explain the process of MBO. What are the benefits & limitations of MBO? How will you

overcome the limitations?

4. (i)Explain the steps involved in strategic planning process. (ii)Distinguish between

strategic planning & operational planning

5.What are the principles for formulating policy in a modern organization? Explain the

essentials of formulating policies.

6. List the various techniques used in business forecasting. Explain any two in detail.

7. Distinguish between programmed & non-programmed decisions & discuss in detail about

the modern approaches to decision making under uncertainties.

8. Explain the principle of planning & discuss the various types of organizational plans with

its merits & demerit.

9. Explain briefly about the major kinds of strategies with examples.

10.Why planning is regarded as the primary function of management. Explain the various

steps in planning.

UNIT 3

PART-A (2 Marks)

45

1. Define span of management/span of control.

2. Give the main difference between the formal and informal organization. Give examples.

3. List out the steps involved in organizing.

4. Discuss “Departmentation”. What is SBU?

5. What are the different bases of departmentation? Compare departmentation by function &

product. 6. Define decentralization. What are its advantages?

7. How do you measure managerial effectiveness?

8. Define staffing. What are the selection process errors?

9. What is meant by performance appraisal?

10. What is career planning & career development?

11. Define Organizing. What is human resource planning?

12. What do you understand by effective organizing?

13. What is functional departmentation?

14. What is on the job training?

15. What is departmentation by process and by product?

16. Mention the three categories of span of management.

17. What is staff authority?

18. Compare Line and staff authority.

19. How can we define power?

20. What is meant by Delegation of Authority? What is over delegation & under delegation?

PART-B (16 Marks)

1. Explain briefly about the various types of Departmentation. Explain its need & importance.

2. (i)Explain briefly about the various types of Organizational structures. (ii)List out the

difference between Formal and Informal organization.

3. Discuss the span of management/managerial effectiveness. Explain the factors that

influence the effective management.

4. (i)Explain briefly about the overall selection process. (ii)Explain about the human resource

planning.

5. Delegation is the ability to get result through others – Discuss. Explain the steps &

guidelines while delegating authority.

6. Define Matrix organization why matrix organization is used? Discuss the advantages &

problems. Give guidelines for making Matrix management effective?

7. Explain the concept of decentralization along with its merits & demerits. How can

decentralization be effective?

8. Discuss the merits and demerits of a line and staff organization with examples. Compare

Line with line & staff organization.

9. Explain the various methods of training. 10. Describe the various types of performance

appraisal.

UNIT 4

PART-A (2 Marks)

1. Define Leading & directing.

2. What are the differences between creativity and innovation?

3. What is „noise‟ in a communication system?

4. What is non-verbal communication?

5. List out the various effective media in communication.

6. List the differences between verbal and non-verbal communication.

46

7. Define Communication. What is meant by downward communication?

8. What do you understand by grape vine communication?

9. State the important rules for effective communication.

10. Why is management by wandering around considered effective communication?

11. State the important characteristics of directing

12. What are the components of communication process?

13. What are the steps involved in creative process?

14. Differentiate innovation and invention.

15. What is meant by Brain Storming?

16. What are the elements of organizational culture?

17. What are the types of organizational culture?

18. What is cultural diversity?

19. What are the sources of culture?

20. Define organization culture.

PART-B (16 Marks)

1. What are the elements of organizational culture? How will you manage cultural diversity?

2. (i) Good communication is the foundation ofSound management. Comment. (ii) Why is

management by wandering around considered effective communication?

3. Discuss in detail about the Creativity and Innovation.

4. Discuss oral and non-verbal communication? Explain them in detail.

5. Define communication. Explain the process of communication.

6. (i)Discuss the effect of electronic media in communication process. (ii)Write a brief note

on barriers to communication & communication network.

7. Explain the different types of communication. Discuss its relative merits and demerits.

8. Explain the importance of communication. Explain the different forms of communication

process.

9. Define the barriers involved in effective communication. Explain few suggestions to

overcome them. 10. What is organizational culture? Explain in detail about the various types

of culture.

UNIT 5

PART-A (2 Marks)

1. Define Controlling. What is critical point control?

2. What are the steps involved in the control process?

3. What is globalisation?

4. What do you mean by Z theory?

5. What do you understand by flexi budget & variable budget?

6. What is meant by maintenance control?

7. What is MNC? Give an example.

8. State some key words of cost control.

9. Mention the application of operation research productivity management?

10. What is budgetary control?

11. Define Productivity.

12. What are the factors affecting productivity?

13. What are the factors to be considered for product design?

14. What is quality control?

15. What is meant by preventive control?

47

16. What is MIS?

17. Give some examples for New Control Technique.

18. What is PERT and CPM?

19. What are the traditional techniques of control?

20. List any four types of control.

PART-B (16 Marks)

1. What are the steps involved in the process of controlling? What are the characteristics of

controlling?

2. Explain in detail the various budgetary & non budgetary control techniques.

3. Discuss in detail about the tools & techniques used for improving Productivity. Discuss the

future of operations research.

4. Explain how computers are useful in controlling organizational issues.

5. What are requirements for effective control? What are the characteristics of controlling?

6. What are the basic steps in planning the system in operations management?

7. Explain the term operations management & the major managerial activities involved in it.

8. Describe the various types of budgets.

9. PERT is a management technique of planning and control. Explain. 10. Explain the types

of control

48

UNCONVENTIONAL MACHINING PROCESS

QUESTION BANK

UNIT I

INTRODUCTION

PART-A

1. Define AJM?

2. How does AJM differ from conventional sand blasting process?

3. What are the advantages of AJM process?

4. What are the applications of AJM?

5. Write the Disadvantages of AJM process?

6. Give the formula for find the material remove rate for brittle metal?

7. Give a summary of the abrasive of their application for different operation?

8. Write the formula for find the MRR for ductile materials?

9. What are the Process parameters affecting the MRR in AJM?

10. What are the disadvantages of using abrasives again and again?

11. What are the different types of nozzles heads used in AJM?

12. Why oxygen should not be used in AJM?

13. What are the different types abrasives used in AJM?

14. Reuse of abrasives is not recommended in AJM. Why?

15. What are the emission lines?

16. What is the Maser principle?

17. What is population inversion?

21. What are the different types of concentrators?

22. What are the characteristics of carrier fluid?

23. What are the elements of Carrier Fluid?

PART-B

1. Explain the factors that should be considered during the selection of an appropriate

unconventional machining process for a given job.

2. Compare and contrast the various unconventional machining processes on the basis of

type of energy employed, material removal rate, transfer media and economical aspects.

3. How to select the unconventional machining process. Explain with suitable example.

4. What are the parameters affecting the accuracy of unconventional machining? Briefly

explain it.

5. Distinguish between Conventional and unconventional machining process and explain it.

UNIT II

MECHANICAL ENERGY BASED PROCESSES

PART-A

1. What are the properties of water jet machining about effect cutting action?

2. What are the types of units and its purpose used in water jet cutting system?

3. Why we are using the diamond nozzle?

4. Why do you select proper cutting fluid in WJM?

49

5. Does there is any environmental effects while using the water jet machining?

6. What are the advantages of WJC over conventional cutting methods?

7. What are the applications of WJM?

8. What are the commonly used additives in WJM?

9. What is optical tracing system?

10. What is ultrasonic machining?

11. What are the advantages of USM?

12. What are the Disadvantages of USM?

13.What are the applications of USM?

14.What are the components of USM?

15. What is ultrasonic transducer?

16. Write short noted on piezoelectric crystals?

17. What is magnetostrictive effect?

18. What are the magnetostrivtive materials employed in USM?

19. What is the purpose of concentrator used in USM?

20. What is abrasive Slurry?

21. What are the types of feed mechanisms used in USM?

PART-B

1. (i) Explain the principle of AJM. Mention some of the specific applications.

(ii) Discuss in detail about the AJM process variables that influence the rate of material

removal and accuracy in the machining.

2. (i) Explain the method of AJM with help of schematic diagram.

(ii) Mention the advantages and limitations of AJM.

3. Explain the process parameters in WJM processs.

4. With neat sketch explain the process of AJM .List its application and limitations.

5. (i) Explain the process parameters that influence WJM.List the applications and

limitations of WJM

(ii) Briefly discuss the application and limitation of WJM.

6. Explain the USM machine setup an discuss various feed mechanisms

7. (i) Discuss the influence process parameters and applications of USM

(ii) Give a note o the various types of transducers.

UNIT-III

ELECTRICAL ENERGY BASED PROCESSES

PART-A (2 MARKS)

1. Define electrical discharge machining?

2. What are functions of dielectric fluid used in EDM?

3. Basic requirement of dielectric fluid used in EDM?

50

4. What the dielectric fluids commonly used in EDM?

5. What are the prime requirements of tool material in EDM?

6. What is the effect of capacitance in EDM?

7. Name some of the tool material used in EDM?

8. What is the process parameter efficiency the MRR?

9. Write the formula for finding the energy discharge in EDM?

10. How do you increase the inductance of the circuit?

11. Define W/T ratio?

12. What is cycle time?

13. Define over cut?

14. Define Rehardening?

15. What is recast metal?

16. Explain electrode wear?

17. What are types of power supply circuits used in EDM?

18. What are the design factors to be considered while selecting the machine tool?

19. Why the servo controlled system is needed in EDM?

20. Define wear ratio?

PART-B

1. Explain the process of electrical discharge machining, its process parameters and

applications.

2. Describe the wire cut EDM equipment, its working, applications and advantages

3. With the help of neat sketch, Describe the EDM process.

4. Explain briefly advantages of wire EDM process.

5. Explain the classification and characteristics of various spark erosion generators.

6. With help of neat sketch describe the mechanism of material removal in EDM.

7. Explain the working principle, elements and characteristics of wire EDM.

8. Explain how the stratified wire works. Also discuss about the recent developments in

wire EDM.

UNIT-IV

CHEMICAL AND ELECTRO-CHEMICAL ENERGY BASED PROCESSES

PART-A (2 MARKS)

1) Define ECM?

2) Write the Faraday‟s first law of electrolysis?

3) Write the Faraday‟s second law of electrolysis?

4) Write Ohm‟s law?

5) What are the factors that influence oxidation in ECM?

6) What are the materials used to make the tool electrode?

7) What are the main functions of electrolysis in the ECM?

8) What are the properties are expected from the electrolysis used in the ECM?

9) What are the electrolysis commonly used in ECM?

51

10) What are the results which is in improper selection of electrolyte in ECM?

11) What are the methods generally used to filter the electrolyte?

12) What are the characteristics of a good ECM tool?

13) What are the parameters that affect the MRR?

14) How the current density affect the MRR?

15) What are the advantages of ECM?

16) What are the limitations of ECM?

17) What are the applications of ECM?

18) Write the disadvantages of EBM?

19) Write any four application of EBM?

20) Write the Richardson-Dushman Equation.

PART-B

1. Describe the chemistry involved in ECM process.

2. Briefly discuss about the effect of high temperature and pressure of electrolyte on the ECM

process.

3. Discuss about the economics of ECM.

4. Describe the working principle and elements of chemical machining. What are the factors

on which the selection of a resist for use in chemical machining?

5. What are the specific advantages of using chemical machining over electro chemical

machining? Give some of the practical applications of chemical machining process.

6. Explain the principle of ECG with sketch.

7. List out the advantage of EGC over conventional grinding.

8. Mention the product applcation of ECG

9. Explain in detail the ECM process with neat sketch and also mention the advantages

and application.

10. Describe the process of electrochemical machining.

11. Discuss about the electrochecmical honing and electrochecmical grinding.

UNIT-V

THERMAL ENERGY BASED PROCESSES

PART-A

1. Define ECG.

2. Which material is used to make the grinding wheel?

3. What are the important functions of abrasive particles used in ECG?

4. What are the advantages of ECG?

5. What are the disadvantages of ECG?

6. What are the limitations of ECG?

7. What is the application of ECG?

8. What is Laser?

9. What is Maser

10. What are the characteristics of Laser beam?

11. What are the gases commonly used in LASER?

12. What are the advantages of Laser drilling?

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13. What are the characteristics of Laser used in Laser machining?

14. What are the fundamentals of photons used in Laser?

15. How does Laser melting works?

16. What is solid state Laser?

17. Define plasma.

18. What are the advantages of plasma arc welding?

19. What are the metals that can't be machined by plasma arc machining?

20. What is the basic heating phenomenon that takes place in plasma arc welding?

21. How does the basic plasma is generated?

22. How the initial ionization is accomplished in plasma arc machining?

23. Why does gas formed in plasma do in P.A.M?

24. How another source of heating achieved in P.A.M?

25. Write the principle of P.A.M

26. Write the circuitry details in PAM.

27. Which type of power supply is used in P.A.M?

28. Which part is constricted by plasma?

29. Define EBM?

30. What is the characteristic of the electron beam?

31. Why vacuum is needed in EBM?

32. Write the application of electron beam?

33.What are the main elements of the EBM equipment?

34. What is the function of magnetic lens used in EBM?

35. What are the two types of EBM?

36. Explain the thermal type EBM?

37. Explain Non-thermal type EBM?

38. Write the advantage of EBM?

PART-B

1. Explain the process of LBM and PAM with neat sketches.

2. Discuss the process parameters of EBM and their influence on machining quality.

3. Explain the process capabilities of EBM and PAM.

4. Explain the principle of LBM with neat sketch

5. List out the advantage and limitation of LBM process

6. Explain the principle of PAM with sketch

7. List out the advantage and limitation of PAM process.

8. Mention the application of EBM

9. What is EBM? Sketch its set up an indicate its main parts and explain the principle

of operation.

10. Explain the principles and elements of EBM, also how the work table is protected

from getting damaged by electron beam.

11. Discuss how the process variables influence MRR, HAZ and pattern generation.