Automobile Engineering Practice Set-5

Show paginator

Hide paginator

20%

Page 1 of 5

1. The best fuels for compression ignition engines are

Naphthalene

Branched chain paraffin

Aromatics

Straight chain paraffin

2. Damper is also known as

Shock absorber

Spring

Radius rod

Torsion bar

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

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

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

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

Two stroke I.C. engines

V6 engines

Four stroke I.C. engines

None of these

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

Electronic control unit system

Magneto system

Battery system

Magneto and electronic system

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

Makes paint film hard

Optimises the viscosity of paint

None of the above

Gives colour and filling up effect to the paint

7. Which of the following is not an automobile?

Passenger car

Aeroplane

Motor cycle

Truck

8. An oil filter bypass valve opens when the

Engine overheats

Engine is cold

Engine runs at high speed

Oil filter becomes clogged

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

Headlights are switched on

Headlights and other lights are switched off

Headlights and other electrical devices are switched off

Headlights and other electrical devices are switched on

10. 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

Enable the pump's fault diagnosis function to operate

Warm up and lubricate the pump

Pressurise the fuel system before the engine is started

Page 2 of 5

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

Avoid ply separation

Equalize wear

Get better ride

None of these

12. The main function of a resonator is that it

Regulates the intake air temperature

Regulates the intake air flow rate

Enhances intake efficiency

Reduces the intake air noise

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

Toe

Steering gear ratio

Camber

Caster

14. Caster is a

(A) Forward tilt of the kingpin

(D) None of these

(B) Backward tilt of the kingpin

15. Vulcanizing means

None of these

Spraying with special paint

Melting rubber while stirring it

Heating rubber under pressure

16. The combustion process in a Diesel engine is a

Adiabatic process

Constant pressure process

Constant temperature process

Constant volume process

17. A front stabilizer bar is used to

Increase vehicle load carrying capacity

Provide a softer ride

All of the above

Control suspension movement and body roll

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

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

Removes impurities from cylinder head lubricating oil

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

19. The material generally used for cylinder sleeves is

Ceramic

Cast iron

Fibre reinforced plastic

Aluminium

20. 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.

Page 3 of 5

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

Near the edges

Near the centre

In the lateral direction

In the cross direction

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

Recharging of a maintenance free battery is neither required nor possible

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

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

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 included angle is the sum of the

Camber and S.A.I.

Castor and S.A.I.

Camber and toe in

Camber and castor

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

Cause less brake fluid pressure to act on the front brakes than on the rear 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

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

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

Oil pump, oil strainer, 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 strainer, oil pump, 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

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

Wheel rim and tyre

Tyre and the road surface

None of these

Wheel rim and road surface

28. The damper fluid leakage typically occur from

Clearance between inner and outer tubes of damper

Bottom of damper

Coil spring mounting

Upper damper mounting

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

Less than the atmospheric pressure

None of these

Equal to the atmospheric pressure

More than the atmospheric pressure

30. The tyre rotation is generally done at

6000 km

1000 km

10,000 km

4000 km

Page 4 of 5

31. The starting system includes

A battery, a starter, and a distributor

A battery, a distributor, and an ignition switch

A battery, a starter, and an ignition switch

A distributor, a starter, and an ignition switch

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

In the fuel tank

On the engine compartment bulkhead

Between the fuel filler pipe and fuel tank

On the distributor mounting in the engine compartment

33. 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

34. A laminated glass upon cracking

Bursts into sharp edged fragments

Sandwiched layer traps the fragments

Bursts into granular pieces

Breaks into the form of crystals

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

Timing belt drive pulley

Radiator fan pulley

Alternator pulley

Distributor

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

4-speed gear box

5-speed gear box

3-speed gear box

6-speed gear box

37. A battery can be charged by

Adding distilled water

Applying a voltage in the same direction to that of charging

Applying voltage in the reverse direction to that of charging

Adding sulphuric acid

38. 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

39. When turning a corner

The front wheels are toeing out

The front wheels are turning on different angles

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

All of the above

40. 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, 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

Page 5 of 5

41. The materials used for cylinder block are

Cast iron and steel

Cast iron and aluminium alloy

Steel and aluminium alloy

Brass and steel

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