Automobile Engineering Practice Set-8

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

Cylinder head

Oil pump

Oil pan

Separate oil tank

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

Minimizes the brake fade

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

3. The crankcase dilution means

Dilution of fuel in the crankcase

Dilution of mixture passing through crankcase in two stroke engines

Dilution of oil by water in the crankcase

Dilution of lubrication oil by fuel in the crankcase

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

4

3

1

2

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

114.3 N

11.43 N

1.143 N

1143 N

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

(c) Both 'A' and 'B'

(b) Both valves are open

(a) Both valves are closed

(d) None of these

7. The oil pump is driven by the

Alternator shaft

Crankshaft via drive belt

Crankshaft directly

Camshaft

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

None of these

Octane number

Performance number

Cetane number

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

Needle roller bearing

Ball bearings

Plain bearings

Taper roller bearing

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

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.

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

The internal gear is fixed to the planetary gear.

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

An excessively high engine speed on a downhill road

Overheating of the fluid due to frequent brake application

Keeping the vehicle without use for an extended period

Overcooling of the brakes during high speed driving

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

Steering system

Wheels

Front axle

Seats

13. The Diesel engines as compared to petrol engines require

Bigger flywheel

No flywheel

Same size of flywheel

Smaller flywheel

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

Insufficient fuel during combustion

High temperature combustion

Insufficient air during combustion

Low temperature combustion

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

1000 rpm

500 rpm

4000 rpm

2000 rpm

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

The hot exhaust

An electric spark

None of these

The heat of compression

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

Suction exhaust power compression

Suction power compression exhaust

Suction compression power exhaust

Exhaust compression power suction

18. A maintenance free battery

Does not contain water

Has lead-calcium plate grid

Does not contain acid

Has lead-antimony plate grid

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

Trapping

Cleaning

Tapping

Bleeding

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

Contamination

Vibration

Humidity

Temperature

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

2

4

1

3

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

Steering gearbox

Tie rod

Steering shaft

Steering wheel

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

Crown of the piston

Skirt of the piston

Piston rings

Piston walls

Automobile Engineering Practice Set-8

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Automobile Engineering Practice Set-8

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