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

Steering system

Front axle

Wheels

Seats

2. A maintenance free battery

Does not contain acid

Does not contain water

Has lead-calcium plate grid

Has lead-antimony plate grid

3. The crankcase dilution means

Dilution of fuel in the crankcase

Dilution of lubrication oil by fuel in the crankcase

Dilution of mixture passing through crankcase in two stroke engines

Dilution of oil by water in the crankcase

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

None of these

The heat of compression

An electric spark

The hot exhaust

5. 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.

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.

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

1

4

3

2

7. The oil pump is driven by the

Alternator shaft

Crankshaft via drive belt

Crankshaft directly

Camshaft

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

Crown of the piston

Piston rings

Skirt of the piston

Piston walls

9. The Diesel engines as compared to petrol engines require

Smaller flywheel

Bigger flywheel

Same size of flywheel

No flywheel

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

Suction exhaust power compression

Suction power compression exhaust

Exhaust compression power suction

Suction compression power exhaust

Page 2 of 3

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

3

2

1

4

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

Octane number

Cetane number

Performance number

None of these

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

Overheating of the fluid due to frequent brake application

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

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

Cylinder head

Oil pump

Oil pan

Separate oil tank

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

Insufficient fuel during combustion

Insufficient air during combustion

High temperature combustion

Low temperature combustion

16. 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

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

Needle roller bearing

Taper roller bearing

Ball bearings

Plain bearings

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

(b) Both valves are open

(c) Both 'A' and 'B'

(d) None of these

(a) Both valves are closed

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

Humidity

Temperature

Contamination

Vibration

20. 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

11.43 N

1143 N

114.3 N

Page 3 of 3

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

Maintains directional control during braking by preventing the wheels from locking

Minimizes the brake fade

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

Reduces the stopping distance

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

500 rpm

2000 rpm

4000 rpm

1000 rpm

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

Bleeding

Tapping

Cleaning

Trapping

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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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