Automobile Engineering Practice Set-5

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

Alternator pulley

Distributor

Timing belt drive pulley

Radiator fan pulley

2. Caster is a

(A) Forward tilt of the kingpin

(D) None of these

(B) Backward tilt of the kingpin

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

Caster

Toe

Steering gear ratio

Camber

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

Magneto system

Battery system

Electronic control unit system

Magneto and electronic system

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

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

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

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

None of these

Get better ride

Avoid ply separation

Equalize wear

7. The included angle is the sum of the

Camber and castor

Camber and S.A.I.

Castor and S.A.I.

Camber and toe in

8. The purpose of a cylinder head gasket is to

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

Removes impurities from cylinder head lubricating oil

None of the above

Prevent engine oil from going into combustion chamber

9. Vulcanizing means

Heating rubber under pressure

Spraying with special paint

None of these

Melting rubber while stirring it

10. 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)

B.P/I.P.

I.P/B.P.

B.P/F.P.

F.P/B.P.

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11. A three way catalytic converter

Burns fuel vapour gases

Re-circulates exhaust gases

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

Reduces N₂, H₂O, and CO₂ emission levels

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

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

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

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

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

13. The best fuels for compression ignition engines are

Naphthalene

Aromatics

Branched chain paraffin

Straight chain paraffin

14. The tyre rotation is generally done at

10,000 km

4000 km

6000 km

1000 km

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

None of these

More than the atmospheric pressure

Less than the atmospheric pressure

Equal to the atmospheric pressure

16. A laminated glass upon cracking

Breaks into the form of crystals

Bursts into sharp edged fragments

Bursts into granular pieces

Sandwiched layer traps the fragments

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

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

Warm up and lubricate the pump

Enable the pump's fault diagnosis function to operate

Pressurise the fuel system before the engine is started

18. Which of the following is not an automobile?

Motor cycle

Aeroplane

Truck

Passenger car

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

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

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

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

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

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

None of these

Wheel rim and road surface

Tyre and the road surface

Wheel rim and tyre

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

5-speed gear box

3-speed gear box

4-speed gear box

6-speed gear box

22. The combustion process in a Diesel engine is a

Constant pressure process

Constant volume process

Constant temperature process

Adiabatic process

23. The material generally used for cylinder sleeves is

Aluminium

Fibre reinforced plastic

Ceramic

Cast iron

24. A front stabilizer bar is used to

All of the above

Control suspension movement and body roll

Increase vehicle load carrying capacity

Provide a softer ride

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

Makes paint film hard

None of the above

Optimises the viscosity of paint

Gives colour and filling up effect to the paint

26. The damper fluid leakage typically occur from

Upper damper mounting

Clearance between inner and outer tubes of damper

Coil spring mounting

Bottom of damper

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

Recharging of a maintenance free battery is neither required nor possible

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

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

28. An oil filter bypass valve opens when the

Engine is cold

Oil filter becomes clogged

Engine overheats

Engine runs at high speed

29. When turning a corner

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

The front wheels are turning on different angles

The front wheels are toeing out

All of the above

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

Stopping distance becomes extremely long

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

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

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

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

None of these

Four stroke I.C. engines

V6 engines

Two stroke I.C. engines

32. The starting system includes

A battery, a starter, and a distributor

A battery, a distributor, and an ignition switch

A distributor, a starter, and an ignition switch

A battery, a starter, and an ignition switch

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

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

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

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

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

On the engine compartment bulkhead

On the distributor mounting in the engine compartment

Between the fuel filler pipe and fuel tank

In the fuel tank

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

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

Turns oil into fine mist for spray lubrication

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

Removes impurities from cylinder head lubricating oil

36. Damper is also known as

Shock absorber

Torsion bar

Spring

Radius rod

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

Headlights are switched on

Headlights and other electrical devices are switched off

Headlights and other lights are switched off

Headlights and other electrical devices are switched on

38. The materials used for cylinder block are

Cast iron and steel

Steel and aluminium alloy

Brass and steel

Cast iron and aluminium alloy

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

Near the centre

In the lateral direction

In the cross direction

Near the edges

40. The main function of a resonator is that it

Enhances intake efficiency

Regulates the intake air flow rate

Regulates the intake air temperature

Reduces the intake air noise

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41. A battery can be charged by

Applying a voltage in the same direction to that of charging

Adding sulphuric acid

Applying voltage in the reverse direction to that of charging

Adding distilled water

Automobile Engineering Practice Set-5

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