Automobile Engineering Objective Questions and Answers

1. The operation of removing trapped air from the hydraulic braking system is known as
(a) Trapping
(b) Tapping
(c) Bleeding
(d) cleaning

2. The service brakes employed in cars are generally operated
(a) Mechanically
(b) Hydraulically
(c) Pneumatically
(d) none of these

3. During braking, the brake shoe is moved outward to force the lining against the
(a) wheel piston or cylinder
(b) anchor pin
(c) brake drum
(d) wheel rim or axle

4. The ABS prevents vehicle
(a) tyre burst
(b) steering fail
(c) brake fail
(d) skidding

5. The purpose of tyre rotation on Automobile is:
(a) Avoid ply separation
(b) Equalize wear
(c) Get better ride
(d) None of these

6. The main function of the brake is:
(a) To change speed
(b) To stop in emergency
(c) To couple the engine to the road wheels
(d) To decelerate the automobile

7. In the disc brake, the disc is attached to:
(a) The piston
(b) The caliper
(c) The wheel hub
(d) None of these

8. Chassis is a strong steel frame which supports the body and engine
(a) Correct
(b) Incorrect
(c) with driving cab
(d) with body

9. The chassis frame consists of rear cross member, diagonal member, intermediate cross member, attachment and front cross member.
(a) Correct
(b) Incorrect
(c) except front cross member
(d) none of these

10. Automotive chassis is a skeletal frame on which various parts like engine, tyres, axle assembly, brakes, steering are bolted.
(a) Correct
(b) Incorrect
(c) with air tank
(d) none of these

11. The three important types of chassis are, ladder chassis, backbone chassis, and monocoque chassis
(a) Correct
(b) Incorrect
(c) except ladder chassis
(d) except backbone chassis

12. Modern cars use
(a) monocoque chassis
(b) ladder chassis
(c) backbone chassis
(d) long chassis

13. The purpose of chassis frame is:
(a) To take the weight of the body
(b) To take the full load of the vehicle
(c) To support the driving cabin
(d) All of these

14. The following defects may be found in the chassis body:
(a) Cracks
(b) Broken welds
(c) Buckling
(d) All of these

15. The shape of the automobile body should be designed in such a way that the air drag is:
(a) Minimum
(b) Maximum
(c) Decreasing
(d) None of these

16. Types of battery used in vehicle are
(a) dry and wet type
(b) only wet type
(c) dry and alkaline type
(d) wet and alkaline type

17. The specific gravity of acid in a fully charged battery is generally
(a) 1.00
(b) 1.28
(c) 1.82
(d) 2.81

18. Alternator generates __________for recharging the battery
(a) direct current
(b) indirect current
(c) field current
(d) coil current

19. The magneto ignition system are mainly used in,
(a) two wheelers
(b) three wheelers
(c) four wheelers
(d) none of these

20. In a dynamo/d.c generator, magnetic field is produced in the
(a) Armature
(b) Commutator
(c) Carbon brushes
(d) Stator

21. An alternator frame is made of:
(a) Cast iron
(b) Brass
(c) Aluminium
(d) Copper

22. Automotive starting motors are:
(a) Series wound
(b) Series-shunt wound
(c) Shunt wound
(d) Both (a) and (b)

23. The device in the electrical system of an automobile that prevents the burning out of the filaments of an electric bulb is:
(a) The cut out
(b) The electrical fuse
(c) The voltage regulator
(d) All of these

24. The contacts of the horn relay are in the circuit between:
(a) The horn button and horn
(b) The relay winding and horn
(c) The horn and battery
(d) None of these

25. The starting motor is a device which converts
(a) Mechanical Energy into Electrical Energy
(b) Electrical Energy into Mechanical Energy
(c) Kinetic Energy into Mechanical Energy
(d) Thermal Energy into Electrical Energy

26. The word vehiculum (vehicle) is derived from:
(a) Greek
(b) Latin
(c) Spanish
(d) Roman

27. An Automobile is:
(a) a self propelled vehicle which is used for transportation of goods and passengers on the ground
(b) a machine used for transportation
(c) that in which power required for the propulsion is produced from within
(d) a name for the self propelled vehicle running on the ground

28. The basic automobile structure consists of the suspension system, wheels, frame and:
(a) Lights
(b) Axles
(c) Steering
(d) brakes

29. Most commonly used power plant on automobiles is:
(a) Gas turbine
(b) Battery
(c) I.C. Engine
(d) Solar

30. A construction of vehicle body and its underlying structures into a single load bearing unit is called monocoque (simple shell). Monocoque is a word from:
(a) French
(b) Latin
(c) Spanish
(d) Hebrew

31. The first pneumatic tyre was made by John Boyd Dunlop (Scotland) in the year:
(a) 1900
(b) 1880
(c) 1888
(d) 1901

32. The location of Nano car engine is in the:
(a) Front
(b) Middle
(c) Rear
(d) None of these

33. The fuel called CNG used in automobiles stands for
(a) Compound Natural Gas
(b) Compound Nature Gasoline
(c) Compound Nature Gas
(d) Compressed Natural Gas

34. Your car fuel tank was empty and you refilled it with 40 lits. of petrol, you drove for 450 kms. And petrol was exhausted. So, your car fuel consumption in terms of kpl (kilometer/litre) is
(a) 10.5
(b) 9
(c) 12
(d) 11.25

35. The engine displacement of Maruti Gypsy is
(a) 1200 c.c.
(b) 1500 c.c.
(c) 1290 c.c.
(d) 1298 c.c.

36. The diesel engines are also known as
(a) steam engine
(b) spark ignition
(c) compression engine
(d) none of these

37. In diesel engines, the duration between the time of injection and the time of ignition is called
(a) spill cut off
(b) delay period
(c) injection period
(d) ignition period

38. In an engine, the temperature of the piston will be more at the
(a) skirt of the piston
(b) crown of the piston
(c) piston walls
(d) piston slots

39. 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

40. The advantage of the fuel injection system over the carburettor system is
(a) improved fuel efficiency
(b) improved emission
(c) improved power output
(d) none of these

41. The diesel engines as compared to petrol engines require
(a) bigger flywheel
(b) smaller flywheel
(c) same size of flywheel
(d) no flywheel

42. The materials used for cylinder block are
(a) cast iron and aluminium alloy
(b) cast iron and steel
(c) steel and aluminium alloy
(d) brass and steel

43. The Ignition in a spark ignition engine takes place when the piston is
(a) exactly at the T.D.C position on its compression stroke
(b) approaching the T.D.C position in its compression stroke
(c) leaving the T.D.C position on its compression stroke
(d) approaching the T.D.C position on its exhaust stroke

44. The sequence order of events in a four-stroke engine is
(a) suction – exhaust – power – compression
(b) suction – power – compression – exhaust
(c) suction – compression – power – exhaust
(d) exhaust – compression – power – suction

45. The camshaft is driven by the crankshaft via the timing belt
(a) Correct
(b) Incorrect
(c) gear pinion
(d) none of these

46. Piston displacement of a vehicle is expressed as
(a) cubic capacity
(b) cubic centimetres
(c) compression capacity
(d) centrifugal capacity

47. Catalytic converters
(a) reduce consumption of fuel
(b) reduce emission into less harmful gases
(c) reduce consumption of engine oil
(d) reduce consumption of diesel

48. The size of engine cylinder is referred in terms of its
(a) diameter and bore
(b) displacement and efficiency
(c) bore and stroke
(d) bore and length

49. Valve overlap is the number of degrees of camshaft rotation during which
(a) both valves are closed
(b) both valves are open
(c) both (a) and (b)
(d) none of these

50. The cycle of four stroke petrol engine is completed on:
(a) four revolutions of crankshaft
(b) three revolutions of crankshaft
(c) two revolutions of crankshaft
(d) none of these