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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 four cylinder inline engine, the number of firing strokes in one revolution of the crank is

2

1

4

3

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

Separate oil tank

Oil pump

Cylinder head

Oil pan

3. 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

4. The crankcase dilution means

Dilution of lubrication oil by fuel in the crankcase

Dilution of oil by water in the crankcase

Dilution of mixture passing through crankcase in two stroke engines

Dilution of fuel in the crankcase

5. A maintenance free battery

Does not contain acid

Does not contain water

Has lead-antimony plate grid

Has lead-calcium plate grid

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

Suction exhaust power compression

Suction compression power exhaust

Exhaust compression power suction

Suction power compression exhaust

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

Octane number

Cetane number

Performance number

None of these

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

Humidity

Contamination

Vibration

Temperature

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

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

Minimizes the brake fade

10. The Diesel engines as compared to petrol engines require

No flywheel

Same size of flywheel

Smaller flywheel

Bigger flywheel

Page 2 of 3

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

The hot exhaust

An electric spark

The heat of compression

None of these

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

Steering shaft

Tie rod

Steering wheel

Steering gearbox

13. 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

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

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.

The internal gear is fixed to the planetary gear.

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

4

3

2

1

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

1000 rpm

500 rpm

2000 rpm

4000 rpm

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

1143 N

114.3 N

11.43 N

1.143 N

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

Trapping

Bleeding

Tapping

Cleaning

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

(c) Both 'A' and 'B'

(b) Both valves are open

(a) Both valves are closed

(d) None of these

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

Ball bearings

Needle roller bearing

Taper roller bearing

Plain bearings

Page 3 of 3

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

Overheating of the fluid due to frequent brake application

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

22. The oil pump is driven by the

Crankshaft via drive belt

Alternator shaft

Crankshaft directly

Camshaft

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

Front axle

Seats

Wheels

Steering system

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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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