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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 a Diesel engine, the fuel is ignited by

The heat of compression

None of these

The hot exhaust

An electric spark

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

Suction compression power exhaust

Suction exhaust power compression

Exhaust compression power suction

Suction power compression exhaust

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

Performance number

None of these

Octane number

Cetane number

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

Steering shaft

Tie rod

Steering gearbox

Steering wheel

5. 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.

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

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

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

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

Wheels

Seats

Front axle

Steering system

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

Minimizes the brake fade

Reduces the stopping distance

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

Maintains directional control during braking by preventing the wheels from locking

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

Needle roller bearing

Plain bearings

Taper roller bearing

Ball bearings

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

Humidity

Vibration

Contamination

Temperature

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

Tapping

Bleeding

Trapping

Cleaning

Page 2 of 3

11. 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

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

(c) Both 'A' and 'B'

(d) None of these

(a) Both valves are closed

(b) Both valves are open

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

Cylinder head

Oil pump

Oil pan

Separate oil tank

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

Piston walls

Crown of the piston

Piston rings

Skirt of the piston

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

2

1

3

4

16. 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 fuel in the crankcase

Dilution of oil by water in the crankcase

17. The oil pump is driven by the

Alternator shaft

Crankshaft via drive belt

Camshaft

Crankshaft directly

18. The Diesel engines as compared to petrol engines require

Smaller flywheel

Bigger flywheel

Same size of flywheel

No flywheel

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

1.143 N

114.3 N

1143 N

11.43 N

20. 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 3 of 3

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

1

2

3

4

22. A maintenance free battery

Has lead-calcium plate grid

Has lead-antimony plate grid

Does not contain water

Does not contain acid

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

1000 rpm

500 rpm

4000 rpm

2000 rpm

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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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