Automobile Engineering Previous Year Questions and Answers

1. Break – even analysis is a :
(A) short term analysis
(B) lung term analysis
(C) average of short and long term analysis
(D) none of the above

2. A double – slider four – bar mechanism consisting of two turning pairs and two sliding pairs, will have a degree of freedom equal to :
(A) 1
(B) 2
(C) 3
(D) 4

3. A ship is seen to enter sea from a river. Its depth of submergence will :
(A) Increase
(B) Decrease
(C) remains same
(D) depend on the material of the ship

4. Position feedback device on NC machine is :
(A) Shaft encoder
(B) Linear scales
(C) Inductosyns
(D) Any of the above

5. If the unit ordering cost is doubled, then the EOQ will :
(A) be halved
(B) be doubled
(C) increase by 1.414 times
(D) decrease by 1.414 times

6. The rivet head used for structural work such as roof trusses is usually :
(A) pan head
(B) snap head
(C) conical head
(D) counter sunk head

7. Bernoulli’s equation is applicable between any two points in :
(A) rotational flow of an incompressible fluid
(B) irrotational flow of compressible or incompressible fluid
(C) steady, rotational flow of an incompressible fluid
(D) steady, irrotational flow of an incompressible fluid

8. The standard input file format for 3-D printing using Fused Deposition Method is :
(A) .stl
(B) .igs
(C) .pdf
(D) .stp

9. Which of the following material is difficult to be spot welded ?
(A) Stainless steel
(B) Copper
(C) Cold rolled mild steel
(D) Hot rolled mild steel

10. Which of the following is a technique for forecasting ?
(A) Exponential smoothing
(B) Gantt chart technique
(C) PERT/CPM
(D) Control charts

11. A control volume refers to :
(A) a specified mass
(B) a fixed region in space
(C) an isolated system
(D) a reversible process

12. Which process does not increase the fatigue strength ?
(A) cold working
(B) shot peening
(C) grinding and lapping
(D) hot working

13. Which of the following type of layout is suitable for automobile manufacture ?
(A) Process layout
(B) Product layout
(C) Fixed position layout
(D) Combination layout

14. A water supply pipeline changes its alignment through a bend when the flow in the pipeline is increased by operating a valve. The flow in the bend is classified as :
(A) steady, uniform flow
(B) unsteady, uniform flow
(C) unsteady, non-uniform flow
(D) steady, non-uniform flow

15. The factor to be considered in design of hydrodynamic journal bearing is :
(A) specific pressure
(B) rubbing speed
(C) viscosity of lubricant
(D) all of the above

16. How many slip systems are present in an HCP crystal structure ?
(A) 3
(B) 6
(C) 12
(D) None of these

17. Which stainless steel is used in cryogenic vessels ?
(A) Ferritic
(B) Austenitic
(C) Martensitic
(D) None of the above

18. If the first and last gears are at the same axis, then the type of gear train is known as :
(A) Compound gear train
(B) Epicyclic gear train
(C) Reverted gear train
(D) Uniaxial gear train

19. The main advantage of the line organization is :
(A) quick decisions at all the levels
(B) defined responsibilities at all the levels
(C) effective control
(D) all of the above

20. A Public Limited Company can be started by :
(A) not less than 7 persons
(B) not less than 3 persons
(C) not less than 2 persons
(D) none of the above

21. Which component is also called wrist pin ?
(A) King pin
(B) Piston pin
(C) Shackle pin
(D) Cotter pin

22. The term ‘valve lash’ in case of over head valve engine refers to :
(A) Valve noise when it hits the seat
(B) Clearance between valve tip and valve actuating component
(C) Clearance between valve face and seat
(D) Valve noise when it hits the rocker tip

23. When the stroke is more than the bore in a piston engine, it is called :
(A) Over – square engine
(B) Boxer engine
(C) Under – square engine
(D) None of the above

24. The material on the positive plate of a fully charged lead acid battery is :
(A) Lead peroxide seen as chocolate brown colour
(B) Spongy lead seen as grey colour
(C) Lead peroxide seen as grey in colour
(D) Spongy lead seen as chocolate brown in colour

25. The necessity of a radiator cap is to :
(A) Increase the boiling point of the coolant
(B) Relieving the system pressure when required
(C) Relieving the system vacuum when required
(D) All of the above

26. The working principle of a conventional automobile clutch is :
(A) Pascal’s law
(B) Bernoulli’s principle
(C) Friction
(D) Hydraulic pressure

27. The component which gives out the heat into atmosphere in a conventional car A/C system is :
(A) Evaporator
(B) Compressor
(C) Condenser
(D) None of the above

28. In Hotchkiss drive for a conventional heavy vehicle, the driving thrust is taken by :
(A) Propeller shaft
(B) Shock absorber
(C) Leaf spring
(D) All of the above

29. In a torque converter system, the engine flywheel is directly connected to :
(A) Impeller
(B) Stator
(C) Turbine
(D) Vane pump

30. In the case of poppet valves, valve guide makes contact with :
(A) Valve head
(B) Valve face
(C) Valve stem
(D) Valve margin

31. The movement of a vehicle with respect to its transverse axis is called :
(A) Rolling
(B) Pitching
(C) Yawing
(D) None of the above

32. In full floating type axle arrangement, the axle casing has to take up :
(A) Driving torque
(B) Vehicle load
(C) All of the above
(D) None of the above

33. Without considering the number of cylinders, which engine will have the least crank shaft length :
(A) Inline engine
(B) V engine
(C) W engine
(D) Radial engine

34. In a Wankel engine, the four processes viz. suction, compression, power and exhaust happens within :
(A) 1/3 rotation
(B) 1/2 rotation
(C) 2 rotations
(D) 1 rotation

35. EGR system helps mainly in reducing which pollutant ?
(A) CO2
(B) CO
(C) HC
(D) NOx

36. In a 4 stroke engine, if the crank shaft gear has 30 teeth, then the camshaft gear will have :
(A) 15 teeth
(B) 60 teeth
(C) 120 teeth
(D) None of the above

37. In a conventional distributor less ignition system equipped on a six cylinder engine, the minimum number of ignition coils will be :
(A) 6
(B) 2
(C) 3
(D) None of the above

38. In a conventional ignition system, the condenser is located :
(A) Inside the distributor cap
(B) On the distributor shaft
(C) On the ignition coil
(D) None of the above

39. Double declutching is required during :
(A) Up – shifting
(B) Down – shifting
(C) Shifting to neutral
(D) Shifting to reverse

40. In a normal head lamp, theoretically the reflector should have the shape :
(A) Elliptical curve
(B) Parabolic curve
(C) Hyperbolic curve
(D) Hemispherical curve

41. Automotive alternator housing is made up of :
(A) Cast iron
(B) Pressed steel
(C) Aluminium
(D) None of the above

42. When the clutch free pedal play is excessively increased, then :
(A) Gear engagement becomes smooth
(B) Gear engagement becomes hard
(C) Clutch life increases
(D) Both (A) and (C)

43. The effect of centrifugal force is more prominent in the working of :
(A) Coil spring clutch
(B) Diaphragm spring clutch
(C) Both coil spring and diaphragm spring clutch equally
(D) Neither coil spring nor diaphragm spring clutch

44. During stall period in a torque converter,
(A) Maximum torque multiplication occurs
(B) Turbine is stationary and impeller is rotating at engine speed
(C) Maximum slip occurs
(D) All of the above

45. In which type of differential gears, the pinion shaft axis lies below the crown wheel axis ?
(A) Straight bevel gear arrangement
(B) Spiral bevel gear arrangement
(C) Hypoid gear arrangement
(D) All of the above

46. In a normal differential, the ends of the cross or spider will be held in the :
(A) Sun gear
(B) Pinion gear
(C) Crown gear
(D) Star gear

47. The component which connects the leaf spring set to the axle casing is:
(A) Centre bolt
(B) Shackle
(C) U bolt
(D) Leaf clamp

48. The helper spring comes into action when :
(A) The load an the main leaf set is more
(B) The deflection of the main leaf set is more
(C) Both (A) and (B)
(D) None of the above

49. The ultimate energy conversion happening in a hydraulic shock absorber is :
(A) Vertical force into hydraulic energy
(B) Vertical force into heat energy
(C) Vertical force into pressure energy
(D) None of the above

50. Ina propeller shaft if the length of the shaft is decreased by half, then the :
(A) Critical whirling speed is increased by four times
(B) Critical whirling speed is decreased by four times
(C) Critical whirling speed is increased twice
(D) Critical whirling speed is decreased to half