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

Crown of the piston

Piston walls

Piston rings

Skirt of the piston

2. The Diesel engines as compared to petrol engines require

Smaller flywheel

No flywheel

Same size of flywheel

Bigger flywheel

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

The heat of compression

An electric spark

The hot exhaust

None of these

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

2

1

3

4

5. The crankcase dilution means

Dilution of lubrication oil by fuel in the crankcase

Dilution of mixture passing through crankcase in two stroke engines

Dilution of fuel in the crankcase

Dilution of oil by water in the crankcase

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

Vibration

Temperature

Humidity

Contamination

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

The internal gear is fixed to the planetary gear.

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

An excessively high engine speed on a downhill road

Keeping the vehicle without use for an extended period

Overcooling of the brakes during high speed driving

Overheating of the fluid due to frequent brake application

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

Reduces the stopping distance

Maintains directional control during braking by preventing the wheels from locking

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

Minimizes the brake fade

10. 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

Page 2 of 3

11. A maintenance free battery

Does not contain acid

Does not contain water

Has lead-antimony plate grid

Has lead-calcium plate grid

12. 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

11.43 N

1.143 N

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

2000 rpm

4000 rpm

500 rpm

1000 rpm

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

None of these

Performance number

Octane number

Cetane number

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

Steering shaft

Steering gearbox

Tie rod

Steering wheel

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

Ball bearings

Taper roller bearing

Needle roller bearing

Plain bearings

17. The oil pump is driven by the

Alternator shaft

Crankshaft via drive belt

Crankshaft directly

Camshaft

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

Steering system

Wheels

Seats

Front axle

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

(c) Both 'A' and 'B'

(a) Both valves are closed

(b) Both valves are open

(d) None of these

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

Oil pump

Cylinder head

Separate oil tank

Oil pan

Page 3 of 3

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

Tapping

Trapping

Bleeding

Cleaning

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

1

4

3

2

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

Suction power compression exhaust

Suction compression power exhaust

Exhaust compression power suction

Suction exhaust power compression

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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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