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Automobile Engineering MCQs
0

Automobile Engineering Practice Set-8

September 5, 2021

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Page 1 of 3

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

Bleeding

Cleaning

Tapping

Trapping

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

(d) None of these

(a) Both valves are closed

(b) Both valves are open

(c) Both 'A' and 'B'

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

Low temperature combustion

Insufficient air during combustion

Insufficient fuel during combustion

High temperature combustion

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

Front axle

Seats

Steering system

Wheels

5. The Diesel engines as compared to petrol engines require

No flywheel

Same size of flywheel

Bigger flywheel

Smaller flywheel

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

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.

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

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

The hot exhaust

The heat of compression

An electric spark

None of these

8. 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

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

Exhaust compression power suction

Suction power compression exhaust

Suction exhaust power compression

Suction compression power exhaust

10. The crankcase dilution means

Dilution of mixture passing through crankcase in two stroke engines

Dilution of lubrication oil by fuel in the crankcase

Dilution of oil by water in the crankcase

Dilution of fuel in the crankcase

Page 2 of 3

11. 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

1143 N

1.143 N

11.43 N

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

4

2

3

1

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

Overcooling of the brakes during high speed driving

Keeping the vehicle without use for an extended period

An excessively high engine speed on a downhill road

Overheating of the fluid due to frequent brake application

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

2

3

1

4

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

Cetane number

None of these

Octane number

Performance number

16. A maintenance free battery

Does not contain water

Has lead-calcium plate grid

Has lead-antimony plate grid

Does not contain acid

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

Taper roller bearing

Plain bearings

Needle roller bearing

Ball bearings

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

Temperature

Vibration

Contamination

Humidity

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

Oil pump

Cylinder head

Separate oil tank

Oil pan

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

2000 rpm

500 rpm

1000 rpm

4000 rpm

Page 3 of 3

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

Skirt of the piston

Piston rings

Piston walls

Crown of the piston

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

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

Minimizes the brake fade

Reduces the stopping distance

Maintains directional control during braking by preventing the wheels from locking

23. The oil pump is driven by the

Crankshaft via drive belt

Alternator shaft

Camshaft

Crankshaft directly

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VideRime

A Demrot is the founder of VideRime Online Learning, a leading engineering website. He did his BE Civil and M.Tech Structure from RGPV University, Bhopal and has been working as an Assistant Professor in a reputed college.

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