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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 sequence order of events in a four stroke engine is

Suction compression power exhaust

Suction power compression exhaust

Exhaust compression power suction

Suction exhaust power compression

3. 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 oil by water in the crankcase

Dilution of fuel in the crankcase

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

Cleaning

Tapping

Bleeding

Trapping

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

2000 rpm

1000 rpm

4000 rpm

500 rpm

6. 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.

The internal gear is fixed to the planetary gear.

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

7. A maintenance free battery

Has lead-antimony plate grid

Does not contain acid

Has lead-calcium plate grid

Does not contain water

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

Temperature

Humidity

Vibration

Contamination

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

Insufficient air during combustion

Low temperature combustion

High temperature combustion

Insufficient fuel during combustion

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

(d) None of these

(b) Both valves are open

(a) Both valves are closed

(c) Both 'A' and 'B'

Page 2 of 3

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

Separate oil tank

Oil pump

Cylinder head

Oil pan

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

Steering gearbox

Tie rod

Steering shaft

Steering wheel

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

Maintains directional control during braking by preventing the wheels from locking

Reduces the stopping distance

Minimizes the brake fade

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

14. The oil pump is driven by the

Crankshaft via drive belt

Alternator shaft

Crankshaft directly

Camshaft

15. 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

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

1143 N

1.143 N

11.43 N

114.3 N

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

Front axle

Wheels

Steering system

Seats

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

Needle roller bearing

Ball bearings

Plain bearings

Taper roller bearing

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

1

2

4

3

20. The Diesel engines as compared to petrol engines require

Smaller flywheel

Same size of flywheel

No flywheel

Bigger flywheel

Page 3 of 3

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

An electric spark

The heat of compression

None of these

The hot exhaust

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

An excessively high engine speed on a downhill road

Overcooling of the brakes during high speed driving

Keeping the vehicle without use for an extended period

Overheating of the fluid due to frequent brake application

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

Cetane number

Performance number

Octane number

None of these

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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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