Automobile Engineering MCQ

1. Four stroke petrol engines are also called:
(a) S.I Engines
(b) C.I Engines
(c) Hybrid Engines
(d) None of these

2. Two stroke engine has higher mechanical efficiency than four stroke engine:
(a) Because of its simple design
(b) As it consumes more lubricating oil
(c) Due to the absence of cams, crankshafts and rockers of the valves
(d) None of these

3. The Diesel Engine is known as:
(a) Constant-Volume Engine
(b) Constant-Pressure Engine
(c) Constant-Volume-Pressure Engine
(d) None of these

4. Common Rail Direct Injection (CRDI) system is used in:
(a) Petrol Engine
(b) Diesel Engine
(c) Steam Engine
(d) Both (a) and (b)

5. One horse power (hp) equals to:
(a) 1 kW
(b) 0.500 kW
(c) 0.750 kW
(d) 0.746 kW

6. The engine bore is:
(a) length of piston
(b) outside diameter of cylinder
(c) top of the piston
(d) inside diameter of cylinder

7. The device for smoothening out the power impulses from the engine is called
(a) Clutch
(b) Differential
(c) Flywheel
(d) torque converter

8. The ball joints are used on the tie-rod ends, because they
(a) reduce the amount of noise generated
(b) reduce the amount of sliding resistance
(c) can deal with movement of the suspension both vertically and in other direction
(d) improve the force transmission speed

9. The correct flow of power through the drive train is
(a) engine – drive shaft – clutch – main shaft – countershaft – final driven gear – wheels
(b) engine – clutch – main shaft – countershaft – final driven gear – drive shaft – wheels
(c) engine – clutch – countershaft – main shaft – final driven gear – drive shaft – wheels
(d) engine – main shaft – countershaft – clutch – final driven gear – drive shaft – wheels

10. Two advantages of using helical gears rather than spur gears in a transmission system are
(a) strength and cost
(b) strength and less end thrust
(c) noise level and strength
(d) noise level and economy

11. In a single dry plate clutch, torsional vibration are absorbed by
(a) coil springs known as torsional springs
(b) cushion springs
(c) central hub
(d) clutch pedal

12. In a four wheel drive (4WD), the number of gear boxes is
(a) 1
(b) 2
(c) 3
(d) 4

13. The clutch is located between the transmission and the
(a) Engine
(b) rear axle
(c) propeller shaft
(d) differential

14. In a gear box, the reverse gear have
(a) synchromesh device
(b) constant mesh gear
(c) sliding mesh gear
(d) haring bone gear

15. Modern cars generally use
(a) multi plate clutch
(b) double plate clutch
(c) single plate clutch
(d) triple plate clutch

16. Modern trucks use an axle of
(a) full floating axle
(b) semi floating axle
(c) hot kiss drive axle
(d) quarter drive axle

17. Propeller shaft is a
(a) solid long shaft
(b) cylindrical long shaft
(c) taper long shaft
(d) helical long shaft

18. Indian cars generally use
(a) conventional gear box
(b) semi-automatic gear box
(c) fully-Automatic gear box
(d) epicyclic gear box

19. Crank shaft of vehicle is at
(a) the top of the engine
(b) the middle of the engine
(c) the bottom of the engine
(d) rear of the engine

20. The purpose of transmission in an automobile is:
(a) To vary the speed
(b) To vary the power
(c) To vary the torque at the road wheels
(d) None of these

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21. The oldest type of manual transmission is:
(a) Sliding mesh type
(b) Constant mesh type
(c) Synchromesh type
(d) None of these

22. Clutch facings are usually attached to the plate by:
(a) Steel rivets
(b) Brass rivets
(c) Aluminium screws
(d) Steel screws

23. The function of Universal joints is:
(a) To allow propeller shaft to change length
(b) To allow propeller shaft to bend sideways
(c) To allow propeller shaft to transfer torque at an angle
(d) None of these

24. The smaller gears inside the differential casing are:
(a) Ring gears
(b) Pinion gears
(c) Sun gears
(d) Side gears

25. The adjustment for backlash in a differential is provided between:
(a) Crown wheel and sun gear
(b) Sun gear and planet gear
(c) Crown wheel and drive pinion
(d) Crown wheel and planet gear

26. An example of front wheel drive is:
(a) Maruti 800
(b) Mahindra Bolero
(c) Renault Duster
(d) None of these

27. Mac Pherson strut type of suspension is used at the
(a) front suspension
(b) rear suspension
(c) middle suspension
(d) none of these

28. Modern commercial trucks use
(a) leaf spring suspension
(b) bellows type of suspension
(c) air assisted suspension
(d) coil spring suspension

29. The main function of suspension system is:
(a) To prevent vehicle from rolling
(b) To prevent vehicle from twisting and pitching
(c) To prevent from road shocks and to preserve the stability of vehicle
(d) None of these

30. The vehicle ride will be comfortable if :
(a) unsprung weight is kept minimum
(b) sprung weight is kept minimum
(c) vehicle weight is kept minimum
(d) none of these

31. The function of a stabiliser in an automobile is to decrease the tendency to:
(a) Roll
(b) Pitch
(c) Yaw
(d) dip

32. The function of a shackle with a leaf spring is to:
(a) allow pivoting of spring end
(b) allow spring length to change
(c) control sideways
(d) control rear torque

33. Shock absorber in an automobile is used to:
(a) Absorb energy
(b) Dissipate energy
(c) Release the energy
(d) Increase the energy

34. Another name for a damper is:
(a) Shock absorber
(b) Torsional bar
(c) Spring
(d) None of these

35. Modern shock absorbers are:
(a) Displacement sensitive
(b) Velocity sensitive
(c) Acceleration sensitive
(d) Force-sensitive

36. Example of unsprung weight of vehicle is:
(a) leaf spring
(b) coil spring
(c) gear box
(d) front and rear axles

37. Power steering are operated on
(a) fluid under pressure
(b) fluid upper pressure
(c) fluid below pressure
(d) fluid gear pressure

38. Steering system includes, steering column, steering gears, pitman’s arm, drop arm, sector shaft
(a) Correct
(b) Incorrect
(c) except drop arm
(d) none of these

39. The angle between the king pin centre line and vertical in a plane of the wheel is called
(a) castor angle
(b) camber angle
(c) kingpin angle
(d) acute angle

40. Backlash in the steering gear box means
(a) back pinion in the gear teeth
(b) clearance between mated gear teeth
(c) clearance between the steering gear and shaft
(d) middle gear pinion in the gear teeth

41. The steering system should fulfil the following requirements for the smooth performance:
(a) It should multiply the turning efforts of the driver and should be irreversible to a certain degree in order to avoid transmission of road shocks to drivers’ hand
(b) It should be reversible so that the road shocks are not transmitted to the driver’s hand
(c) It should reduce the efforts of the driver to make driving easy
(d) None of these

42. The assembly of the shaft and jacket in a steering system of a vehicle is called:
(a) Steering box
(b) Steering linkages
(c) Steering column
(d) None of these

43. Ackermann steering mechanism is preferred to Davis steering mechanism due to:
(a) Its designs
(b) Its simplicity
(c) Its colour
(d) None of these

44. When the slip angle is greater at the rear than at the front, the vehicle tends to:
(a) Understeer
(b) Middlesteer
(c) Oversteer
(d) None of these

45. Draglink connects the steering arm/drop arm with:
(a) Pitman arm
(b) Front axle
(c) Knuckle arm
(d) None of these

46. In Maruti 800, the following type of steering gear is used:
(a) Worm and roller steering gear
(b) Cam and roller steering gear
(c) Rack and pinion steering gear
(d) None of these

47. The advantages of power steering are:
(a) The required steering effort is considerably reduced and road shocks are not transmitted to the steering wheel.
(b) The overall cost is less
(c) Maintenance cost is less.
(d) None of these

48. An electronic power steering system consists of:
(a) Torque sensor and rotation sensor
(b) Wheel sensor and torque sensor
(c) Rotary sensor and wheel sensor
(d) None of these

49. Turning radius is the radius of the circle on which the outside front wheel moves:
(a) When the front wheels are turned to their extreme outer position
(b) When the rear wheels are turned to their extreme outer position
(c) When the front wheels are turned to their extreme inner position
(d) When the rear wheels are turned to their extreme inner position