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Automobile Engineering MCQs
2

Automobile Engineering Practice Set-5

May 6, 2021

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Page 1 of 5

1. The basic purpose of tyre rotation on automobiles is to

Equalize wear

None of these

Get better ride

Avoid ply separation

2. The main characteristics of a maintenance free (MF) battery is that

A maintenance free battery has a relatively short shelf life when compared with standard batteries

Since it is sealed, the water in maintenance free battery is not lost through evaporation thus accordingly it is not necessary to top up the cells with water

A maintenance free battery requires little maintenance during normal use and it is sufficient to add water instead of an electrolyte containing sulphuric acid

Recharging of a maintenance free battery is neither required nor possible

3. The rolling resistance is because of the friction between the

Tyre and the road surface

Wheel rim and road surface

Wheel rim and tyre

None of these

4. In which of the following conditions, the idle CO percentage should be measured with the vehicle?

Headlights and other electrical devices are switched off

Headlights are switched on

Headlights and other lights are switched off

Headlights and other electrical devices are switched on

5. Which of the following parameter can be adjusted by modifying the tie rod attachment length?

Toe

Camber

Caster

Steering gear ratio

6. Instead of valves, the ports are used in case of

Two stroke I.C. engines

Four stroke I.C. engines

V6 engines

None of these

7. The timing belt is attached to the camshaft pulley and

Distributor

Timing belt drive pulley

Alternator pulley

Radiator fan pulley

8. The ignition in a spark ignition engine takes place when the piston is

Approaching the T.D.C position on its exhaust stroke

Leaving the T.D.C. position on its compression stroke

Approaching the T.D.C. position on its compression stroke

Exactly at the T.D.C. position on its compression stroke

9. Vulcanizing means

None of these

Heating rubber under pressure

Melting rubber while stirring it

Spraying with special paint

10. The included angle is the sum of the

Camber and toe in

Camber and S.A.I.

Castor and S.A.I.

Camber and castor

Page 2 of 5

11. An under-inflated tyre will wear the tread most

Near the centre

In the cross direction

In the lateral direction

Near the edges

12. When turning a corner

The inside front wheels has a greater angle than the outside wheel

The front wheels are toeing out

The front wheels are turning on different angles

All of the above

13. The function of an oil control orifice is that it

Removes impurities from cylinder head lubricating oil

Returns cylinder head lubricating oil to the oil pan at high speed

Turns oil into fine mist for spray lubrication

Regulates the pressure of engine oil supplied by the oil pump for the lubrication of cylinder head mechanism and other purposes

14. The most accurate ignition system of a spark ignition engine is

Electronic control unit system

Magneto system

Magneto and electronic system

Battery system

15. The main function of a resonator is that it

Regulates the intake air flow rate

Regulates the intake air temperature

Reduces the intake air noise

Enhances intake efficiency

16. A laminated glass upon cracking

Sandwiched layer traps the fragments

Breaks into the form of crystals

Bursts into granular pieces

Bursts into sharp edged fragments

17. When the front wheels of a vehicle are locked during braking, then

Driver loses control over the steering, and the vehicle continues moving in its current direction

Stopping distance becomes extremely long

Rear tyres skid across the road surface, and the vehicle spins around

Front tyres skid across the road surface, and the vehicle spins around

18. Caster is a

(C) Either 'A' or 'B'

(B) Backward tilt of the kingpin

(D) None of these

(A) Forward tilt of the kingpin

19. The combustion process in a Diesel engine is a

Constant temperature process

Constant pressure process

Adiabatic process

Constant volume process

20. The material generally used for cylinder sleeves is

Fibre reinforced plastic

Cast iron

Aluminium

Ceramic

Page 3 of 5

21. A battery can be charged by

Adding distilled water

Applying voltage in the reverse direction to that of charging

Adding sulphuric acid

Applying a voltage in the same direction to that of charging

22. The purpose of adding pigment to the paint is that it

Gives colour and filling up effect to the paint

Makes paint film hard

Optimises the viscosity of paint

None of the above

23. A three way catalytic converter

Re-circulates exhaust gases

Removes CO, HC, and NO₂ from the exhaust gases passing through it

Reduces N₂, H₂O, and CO₂ emission levels

Burns fuel vapour gases

24. The purpose of a cylinder head gasket is to

Prevent engine oil from going into combustion chamber

None of the above

Prevent the combustion gases from leaking from the joint between the cylinder block and the cylinder head

Removes impurities from cylinder head lubricating oil

25. The starting system includes

A battery, a distributor, and an ignition switch

A battery, a starter, and an ignition switch

A battery, a starter, and a distributor

A distributor, a starter, and an ignition switch

26. The function of a proportioning control valve (PCV) in a brake system is to

Reduce the brake fluid pressure when the brakes approach their lockup point

Cause less brake fluid pressure to act on the rear brakes than on the front brakes when the fluid pressure exceeds a predetermined level

Ensure that equal pressure is supplied to the front and rear brakes throughout every braking operation

Cause less brake fluid pressure to act on the front brakes than on the rear brakes when the fluid pressure exceeds a predetermined level

27. The damper fluid leakage typically occur from

Bottom of damper

Upper damper mounting

Clearance between inner and outer tubes of damper

Coil spring mounting

28. The fuel pump of a programmed fuel injection (PFI) system operate for two seconds when the ignition is turned to the start position to

Warm up and lubricate the pump

Enable the pump's fault diagnosis function to operate

Supplies a large amount of fuel and thereby creates a choke effect

Pressurise the fuel system before the engine is started

29. The order in which effort applied to the steering wheel is transferred to the front wheel is

Steering wheel, steering shaft, steering gearbox, steering knuckle, tie rod, front wheels

Steering wheel, steering gearbox, steering shaft, tie rod, steering knuckle, front wheels

Steering wheel, steering shaft, steering gearbox, tie rod, steering knuckle, front wheels

Steering wheel, tie rod, steering gearbox, steering shaft, steering knuckle, front wheels

30. Which of the following is not an automobile?

Truck

Passenger car

Motor cycle

Aeroplane

Page 4 of 5

31. When a gear box has four forward speeds and one reverse speed, it is said to be a

4-speed gear box

3-speed gear box

5-speed gear box

6-speed gear box

32. The mechanical efficiency (ηm) of an I.C. engine is equal to (where I.P. = Indicated power, B.P. = Brake power and F.P. = Frictional power)

F.P/B.P.

B.P/F.P.

I.P/B.P.

B.P/I.P.

33. During suction stroke, the inside pressure of cylinder is

Equal to the atmospheric pressure

None of these

More than the atmospheric pressure

Less than the atmospheric pressure

34. The lubrication oil flow in an engine is in the order as

Oil strainer, oil pump, relief valve, oil filter, cylinder head, cylinder block and oil pan

Oil strainer, oil pump, relief valve, oil filter, cylinder block, cylinder head and oil pan

Oil strainer, oil filter, relief valve, oil pump, cylinder block, cylinder head and oil pan

Oil pump, oil strainer, relief valve, oil filter, cylinder block, cylinder head and oil pan

35. A front stabilizer bar is used to

Provide a softer ride

All of the above

Increase vehicle load carrying capacity

Control suspension movement and body roll

36. The fuel pump in the programmed fuel injection (PFI) system is located

On the distributor mounting in the engine compartment

In the fuel tank

Between the fuel filler pipe and fuel tank

On the engine compartment bulkhead

37. The tyre rotation is generally done at

1000 km

10,000 km

6000 km

4000 km

38. The best fuels for compression ignition engines are

Straight chain paraffin

Naphthalene

Aromatics

Branched chain paraffin

39. The materials used for cylinder block are

Cast iron and aluminium alloy

Steel and aluminium alloy

Brass and steel

Cast iron and steel

40. An oil filter bypass valve opens when the

Oil filter becomes clogged

Engine runs at high speed

Engine overheats

Engine is cold

Page 5 of 5

41. Damper is also known as

Shock absorber

Radius rod

Torsion bar

Spring

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A Demrot is the founder of VideRime Online Learning, a leading engineering website. He did his BE Civil and M.Tech Structure from RGPV University, Bhopal and has been working as an Assistant Professor in a reputed college.

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creazione dell'account binance says:
February 13, 2026 at 11:48 am
Your point of view caught my eye and was very interesting. Thanks. I have a question for you.
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binance sign up says:
March 6, 2026 at 6:24 am
Can you be more specific about the content of your article? After reading it, I still have some doubts. Hope you can help me.
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