Automobile Engineering MCQ Solved Paper for IBPS SO

1. Which of the following bulb in a car will have the least wattage?
A. Head light bulb
B. Stop light bulb
C. Parking light bulb
D. Ignition warning bulb
Answer : D

2. The exhaust gas from petrol engine contains
A. Petrol vapours
B. Water vapours
C. Carbon monoxide
D. All of these
Answer : D

3. Wheel base of a vehicle is the
A. Distance between the centres of the front and rear wheels
B. Distance between the centres of the front tyres
C. Distance between the centres of the rear tyres
D. Extreme length of the vehicle
Answer : A

4. A laminated glass upon cracking
A. Bursts into sharp edged fragments
B. Bursts into granular pieces
C. Sandwiched layer traps the fragments
D. Breaks into the form of crystals
Answer : C

5. In automobiles G.V.W. refers to
A. Gross vehicle width
B. Gross vehicle weight
C. Gross vehicle wheel base
D. Gross vehicle wheel track
Answer : B

6. Damper is also known as
A. Shock absorber
B. Torsion bar
C. Spring
D. Radius rod
Answer : A

7. The main purpose of an engine's air cleaner is that it
A. Controls the engine's air intake volume
B. Reduces the engine's air intake noise
C. Prevents rain water from entering the engine
D. Prevents dust and other foreign matter from entering the engine
Answer : D

8. The crescent shaped cavity on the piston head top surface is called as
A. Piston oil hole
B. Snap ring
C. Valve recess
D. Valve clearance
Answer : C

9. A clutch is usually designed to transmit maximum torque which is
A. Equal to the maximum engine torque
B. 80 % of the maximum engine torque
C. 150 % of the maximum engine torque
D. None of these
Answer : C

10. The Diesel engines as compared to petrol engines require
A. Bigger flywheel
B. Smaller flywheel
C. Same size of flywheel
D. No flywheel
Answer : A

11. The damper fluid leakage typically occur from
A. Upper damper mounting
B. Bottom of damper
C. Clearance between inner and outer tubes of damper
D. Coil spring mounting
Answer : C

12. The lower cylindrical portion of the piston which improves piston cooling performance is called
A. Piston crown
B. Connecting rod
C. Piston pin boss
D. Piston skirt
Answer : D

13. The specific gravity of petrol is about
A. 0.75
B. 0.85
C. 0.95
D. 1.25
Answer : A

14. In a Diesel engine, the fuel is ignited by
A. An electric spark
B. The heat of compression
C. The hot exhaust
D. None of these
Answer : B

15. The problems caused by the wheel imbalance are
A. Hard steering and hard ride
B. Poor acceleration and hard steering
C. Steering wheel vibrations and uneven tyre wear
D. Poor acceleration and reduced fuel efficiency
Answer : C

16. The connecting rod connects the piston and the
A. Cylinder head
B. Cylinder block
C. Camshaft
D. Crankshaft
Answer : D

17. The mechanical efficiency (?m) of an I.C. engine is equal to (where I.P. = Indicated power, B.P. = Brake power and F.P. = Frictional power)
A. I.P/B.P.
B. B.P/I.P.
C. B.P/F.P.
D. F.P/B.P.
Answer : B

18. When the front wheels of a vehicle are locked during braking, then
A. Stopping distance becomes extremely long
B. Front tyres skid across the road surface, and the vehicle spins around
C. Rear tyres skid across the road surface, and the vehicle spins around
D. Driver loses control over the steering, and the vehicle continues moving in its current direction
Answer : D

19. Which of the following parameter can be adjusted by modifying the tie rod attachment length?
A. Camber
B. Caster
C. Toe
D. Steering gear ratio
Answer : C

20. The piston compression rings are made of
A. Cast iron
B. Steel
C. Aluminium
D. Bronze
Answer : A

21. The brake pedal during ABS operation
A. Is pushed upward forcefully
B. Pedal stroke becomes longer
C. Transmits slight kickback to the driver's foot
D. All of the above
Answer : C

22. In a square type engine
A. Geometrical shape is square
B. Diameter and length of piston are same
C. Two cylinders are placed horizontal and two vertical
D. Stroke length and cylinder bore are same
Answer : D

23. The rigid suspension is beneficial when
A. It is desired to reduce the unsprung mass
B. It is desired to have more flexibility in design
C. It is desired to improve tyre to ground contact characteristics
D. Large changes in load make it necessary to have a large suspension stroke
Answer : D

24. The advantage of having a tandem master cylinder arrangement in automobiles is that it
A. Enhances safety by serving two independent lines in a divided line brake circuit
B. Enhances safety by activating the brakes using vacuum pressure in the event of brake fluid loss
C. Supplies equal fluid pressure to each line of a divided line brake circuit, thereby preventing the brakes from dragging on one side
D. Boosts the brake fluid pressure to reduce the force required to depress the brake pedal
Answer : A

25. An overinflated tyre will wear the tread most near the
A. Edges
B. Corners
C. Centre
D. None of these
Answer : C

26. The heat transfer from coolant to air in the radiator of an automobile engine takes place by
A. Radiation only
B. Convention only
C. Convection and radiation
D. Conduction, convection and radiation
Answer : C

27. The reconditioning process used to give cylinder bore surfaces a crosshatch pattern, is known as
A. Honing
B. Porous plating
C. Boring
D. Shot peening
Answer : A

28. The two rows of cylinders in a 'V' type engine are generally arranged at
A. 45°
B. 60°
C. 90°
D. 130°
Answer : B

29. The painting of automobiles is done to
A. Prevent rust from growing on the body
B. Improve its external appearance
C. Retain the characteristics of steel for long
D. All of these
Answer : D

30. 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 directions
D. Improve the force transmission speed
Answer : C

31. It is necessary to maintain the valve clearances as they
A. Reduce the resistance to sliding that occurs between the cam and the tappet
B. Allow for lengthening of the valves owing to the heat of combustion
C. Increase the speed at which the valves move up and down
D. Make the crankshaft turn smoothly
Answer : B

32. The instrument used to check specific gravity of acid in a battery is
A. Hydrometer
B. Hygrometer
C. Anemometer
D. Multimeter
Answer : A

33. An oil filter bypass valve opens when the
A. Engine is cold
B. Engine overheats
C. Oil filter becomes clogged
D. Engine runs at high speed
Answer : C

34. The braking control type traction control system (TCS) generally operates in the speed range of
A. Less than 20 kmph
B. Less than 40 kmph
C. Less than 60 kmph
D. More than 60 kmph
Answer : B

35. In petrol engines, during suction stroke, ________ is drawn in the cylinder
A. Air and fuel
B. Only fuel
C. Only air
D. None of these
Answer : A

36. In Diesel engines, during suction stroke, ________ is drawn in the cylinder.
A. Air and fuel
B. Only fuel
C. Only air
D. None of these
Answer : C

37. The caster is called positive when the top of the king pin is inclined to the
A. Rear of the vehicle
B. Front of the vehicle
C. Left of the vehicle
D. Right of the vehicle
Answer : A

38. The function of an alternator in an automobile is to
A. Supply electric power
B. Converts mechanical energy into electrical energy
C. Continually recharges the battery
D. Partly converts engine power into electric power
Answer : C

39. The diagram which shows the correct crank positions corresponding to the opening and closing of the valves, is known as
A. Indicator diagram
B. Axial force diagram
C. Valve timing diagram
D. None of these
Answer : C

40. An underinflated tyre will wear the tread most
A. Near the centre
B. Near the edges
C. In the lateral direction
D. In the cross direction
Answer : B

41. The correct way to rectify an imbalanced wheel is to
A. Adjust the tyre pressure
B. Rotate the tyres
C. Adjust the damper spring tension
D. Attach appropriate weights to the wheel at appropriate positions
Answer : D

42. The parking brakes employed in vehicles are operated
A. Mechanically
B. Hydraulically
C. Pneumatically
D. None of these
Answer : A

43. If the engine coolant leaks into the engine oil, then engine oil
A. Appears milky
B. Become foamy
C. Turns black
D. None of these
Answer : A

44. When indicated power (I.P.) and frictional power (F.P.) are known, we can calculate
A. Brake power
B. Compression ratio
C. Specific air consumption
D. Mean effective pressure
Answer : A

45. Tachometer in a vehicle measures
A. Speed
B. Distance
C. Engine r.p.m.
D. Fuel consumption
Answer : C

46. In aluminium cylinder blocks, the cylinder liners are made of
A. Aluminium
B. Ceramic
C. Brass
D. Cast iron
Answer : D

47. The major purpose of an electronically controlled automatic transmission is that this type of transmission
A. Eliminates gear clutches
B. Eliminates the gear shaft lever
C. Reduces the number of automatic transmission components
D. Reduces shift shock and achieves more efficient transmission of engine torque
Answer : D

48. A heat treated glass generally used in automobiles bursts into ________ upon cracking,
A. Sharp edged fragments
B. Small particles
C. Large particles
D. None of these
Answer : B

49. If clearance volume of I.C. engines is increased, the compression ratio will
A. Increase
B. Decrease
C. Remain constant
D. Be doubled
Answer : B

50. Incorrect steering axis inclination (S.A.I.) causes
A. Tendency to assume toe-out orientation
B. Generation of a braking effect at tight corners
C. Poor recovery of the steering wheel after making a turn
D. The vehicle to pull to the side of lesser inclination
Answer : C