Automobile Engineering Practice Set-8

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1. The component that is responsible for converting the rotation of the steering wheel into lateral motion is the

Steering wheel

Tie rod

Steering shaft

Steering gearbox

2. The oil pump is driven by the

Alternator shaft

Crankshaft directly

Crankshaft via drive belt

Camshaft

3. The sequence order of events in a four stroke engine is

Suction compression power exhaust

Suction exhaust power compression

Suction power compression exhaust

Exhaust compression power suction

4. In a Diesel engine, the fuel is ignited by

The heat of compression

An electric spark

The hot exhaust

None of these

5. The coefficient of rolling resistance for a truck weighing 63,500 N is 0.018. The rolling resistance to the truck is

1143 N

114.3 N

1.143 N

11.43 N

6. A maintenance free battery

Has lead-calcium plate grid

Does not contain water

Does not contain acid

Has lead-antimony plate grid

7. The crankcase dilution means

Dilution of oil by water in the crankcase

Dilution of mixture passing through crankcase in two stroke engines

Dilution of fuel in the crankcase

Dilution of lubrication oil by fuel in the crankcase

8. The engine oil is stored in _________ when the engine is not running.

Separate oil tank

Oil pan

Cylinder head

Oil pump

9. The operation of removing trapped air from the hydraulic braking system is known as

Tapping

Bleeding

Trapping

Cleaning

10. In a four wheel drive (4WD), the numbers of gear boxes are

4

3

2

1

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11. The Diesel engines as compared to petrol engines require

Bigger flywheel

No flywheel

Smaller flywheel

Same size of flywheel

12. The function of anti-lock brake system (ABS) is that is

Prevents nose dives during braking and thereby postpones locking of the wheels

Maintains directional control during braking by preventing the wheels from locking

Reduces the stopping distance

Minimizes the brake fade

13. The rating of C.I. engine fuel (Diesel) is given by

None of these

Octane number

Cetane number

Performance number

14. In a four cylinder inline engine, the number of firing strokes in one revolution of the crank is

1

4

2

3

15. Which of the following is not a part of the chassis?

Front axle

Steering system

Wheels

Seats

16. The condition that results in large quantities of CO emission is

Low temperature combustion

High temperature combustion

Insufficient fuel during combustion

Insufficient air during combustion

17. The main cause for the change in engine oil viscosity is

Vibration

Temperature

Contamination

Humidity

18. The camshaft of a four stroke Diesel engine running at 1000 rpm will run at

500 rpm

4000 rpm

1000 rpm

2000 rpm

19. Which one of the following statements correctly describes the construction of a planetary gear type differential?

The internal gear is fixed to the planetary gear.

Each planetary pinion gear meshes with both the central gear and the internal gear.

The six planetary pinions rotate in constant mesh with the internal gears.

One drive shaft is splined to the central gear and the other to the planetary gear.

20. The condition that causes vapour locking in a brake system is

Keeping the vehicle without use for an extended period

Overheating of the fluid due to frequent brake application

Overcooling of the brakes during high speed driving

An excessively high engine speed on a downhill road

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21. What type of bearing is used for main bearings and connecting rod bearings?

Ball bearings

Plain bearings

Taper roller bearing

Needle roller bearing

22. In an engine, the temperature of the piston will be more at the

Piston rings

Piston walls

Crown of the piston

Skirt of the piston

23. Valve overlap is the number of degrees of camshaft rotation during which

(c) Both 'A' and 'B'

(b) Both valves are open

(d) None of these

(a) Both valves are closed

Automobile Engineering Practice Set-8

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Automobile Engineering Practice Set-8

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