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

4000 rpm

500 rpm

2000 rpm

1000 rpm

2. 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

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

Octane number

None of these

Cetane number

Performance number

4. A maintenance free battery

Does not contain acid

Has lead-antimony plate grid

Has lead-calcium plate grid

Does not contain water

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

Temperature

Vibration

Humidity

Contamination

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

Steering system

Wheels

Seats

Front axle

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

The heat of compression

None of these

The hot exhaust

An electric spark

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

Tapping

Trapping

Bleeding

Cleaning

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

Overcooling of the brakes during high speed driving

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

10. The crankcase dilution means

Dilution of oil by water in the crankcase

Dilution of lubrication oil by fuel in the crankcase

Dilution of fuel in the crankcase

Dilution of mixture passing through crankcase in two stroke engines

Page 2 of 3

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

Suction exhaust power compression

Suction compression power exhaust

Suction power compression exhaust

Exhaust compression power suction

12. The Diesel engines as compared to petrol engines require

Smaller flywheel

No flywheel

Same size of flywheel

Bigger flywheel

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

Insufficient air during combustion

Insufficient fuel during combustion

Low temperature combustion

High temperature combustion

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

Plain bearings

Needle roller bearing

Ball bearings

Taper roller bearing

15. 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.

16. 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

1.143 N

11.43 N

1143 N

17. The oil pump is driven by the

Crankshaft via drive belt

Crankshaft directly

Camshaft

Alternator shaft

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

Piston walls

Piston rings

Crown of the piston

Skirt of the piston

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

Steering gearbox

Steering shaft

Steering wheel

Tie rod

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

Separate oil tank

Oil pan

Cylinder head

Oil pump

Page 3 of 3

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

4

1

3

2

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

3

2

1

4

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

(a) Both valves are closed

(c) Both 'A' and 'B'

(d) None of these

(b) Both valves are open

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Tags: Automobile Automobile Engineering MCQs Engineering Drawing MCQs Mechanical Engineering Refrigeration & Air-Conditioning

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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