Automobile Engineering Practice Set-5

Show paginator

Hide paginator

20%

Page 1 of 5

1. The materials used for cylinder block are

Cast iron and aluminium alloy

Brass and steel

Steel and aluminium alloy

Cast iron and steel

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

V6 engines

None of these

Two stroke I.C. engines

Four stroke I.C. engines

3. 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

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

4. The material generally used for cylinder sleeves is

Ceramic

Fibre reinforced plastic

Cast iron

Aluminium

5. Which of the following is not an automobile?

Passenger car

Motor cycle

Aeroplane

Truck

6. A three way catalytic converter

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

Reduces N₂, H₂O, and CO₂ emission levels

Burns fuel vapour gases

Re-circulates exhaust gases

7. 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

Pressurise the fuel system before the engine is started

Enable the pump's fault diagnosis function to operate

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

6-speed gear box

4-speed gear box

5-speed gear box

3-speed gear box

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

In the lateral direction

Near the centre

Near the edges

In the cross direction

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

Steering gear ratio

Toe

Camber

Caster

Page 2 of 5

11. 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

In the fuel tank

Between the fuel filler pipe and fuel tank

12. 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.

I.P/B.P.

B.P/I.P.

B.P/F.P.

13. When turning a corner

The front wheels are turning on different angles

All of the above

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

The front wheels are toeing out

14. A front stabilizer bar is used to

Provide a softer ride

Control suspension movement and body roll

All of the above

Increase vehicle load carrying capacity

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

Tyre and the road surface

None of these

Wheel rim and road surface

Wheel rim and tyre

16. A laminated glass upon cracking

Sandwiched layer traps the fragments

Bursts into sharp edged fragments

Bursts into granular pieces

Breaks into the form of crystals

17. 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 compression stroke

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

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

18. The combustion process in a Diesel engine is a

Constant pressure process

Constant temperature process

Constant volume process

Adiabatic process

19. The included angle is the sum of the

Castor and S.A.I.

Camber and toe in

Camber and S.A.I.

Camber and castor

20. 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 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 block, cylinder head and oil pan

Page 3 of 5

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

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

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

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

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

22. A battery can be charged by

Applying a voltage in the same direction to that of charging

Applying voltage in the reverse direction to that of charging

Adding sulphuric acid

Adding distilled water

23. The starting system includes

A battery, a distributor, and an ignition switch

A distributor, a starter, and an ignition switch

A battery, a starter, and a distributor

A battery, a starter, and an ignition switch

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

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

Stopping distance becomes extremely long

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

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

25. 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 has a relatively short shelf life when compared with standard batteries

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

26. The main function of a resonator is that it

Reduces the intake air noise

Regulates the intake air temperature

Regulates the intake air flow rate

Enhances intake efficiency

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

None of these

Equal to the atmospheric pressure

More than the atmospheric pressure

Less than the atmospheric pressure

28. The tyre rotation is generally done at

6000 km

1000 km

10,000 km

4000 km

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

Electronic control unit system

Battery system

Magneto and electronic system

Magneto system

30. Caster is a

(B) Backward tilt of the kingpin

(A) Forward tilt of the kingpin

(D) None of these

Page 4 of 5

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

Timing belt drive pulley

Distributor

Alternator pulley

Radiator fan pulley

32. Vulcanizing means

Melting rubber while stirring it

Spraying with special paint

None of these

Heating rubber under pressure

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

Avoid ply separation

Equalize wear

None of these

Get better ride

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

Optimises the viscosity of paint

Makes paint film hard

Gives colour and filling up effect to the paint

None of the above

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

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

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

Removes impurities from cylinder head lubricating oil

36. The purpose of a cylinder head gasket is to

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

Prevent engine oil from going into combustion chamber

37. The damper fluid leakage typically occur from

Upper damper mounting

Clearance between inner and outer tubes of damper

Coil spring mounting

Bottom of damper

38. Damper is also known as

Torsion bar

Shock absorber

Spring

Radius rod

39. The best fuels for compression ignition engines are

Aromatics

Straight chain paraffin

Branched chain paraffin

Naphthalene

40. An oil filter bypass valve opens when the

Engine is cold

Engine overheats

Engine runs at high speed

Oil filter becomes clogged

Page 5 of 5

41. 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

Automobile Engineering Practice Set-5

Related

Leave a ReplyCancel reply

Secured Payments

Protection

Automobile Engineering Practice Set-5

Share this Now with Friends:

Related

Leave a ReplyCancel reply

Secured Payments

Protection