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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 crankcase dilution means

Dilution of mixture passing through crankcase in two stroke engines

Dilution of fuel in the crankcase

Dilution of lubrication oil by fuel in the crankcase

Dilution of oil by water in the crankcase

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

Steering system

Seats

Wheels

Front axle

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

The hot exhaust

An electric spark

The heat of compression

None of these

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

11.43 N

1143 N

114.3 N

1.143 N

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

4

1

2

3

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

Plain bearings

Needle roller bearing

Ball bearings

Taper roller bearing

7. The Diesel engines as compared to petrol engines require

Same size of flywheel

Smaller flywheel

No flywheel

Bigger flywheel

8. 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 internal gear is fixed to the planetary gear.

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

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

9. The oil pump is driven by the

Crankshaft directly

Crankshaft via drive belt

Alternator shaft

Camshaft

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

Contamination

Humidity

Temperature

Vibration

Page 2 of 3

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

Cylinder head

Oil pump

Oil pan

Separate oil tank

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

Overcooling of the brakes during high speed driving

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

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

Tapping

Cleaning

Trapping

Bleeding

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

Cetane number

Octane number

Performance number

None of these

15. A maintenance free battery

Does not contain acid

Has lead-antimony plate grid

Has lead-calcium plate grid

Does not contain water

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

500 rpm

2000 rpm

1000 rpm

4000 rpm

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

Skirt of the piston

Piston walls

Crown of the piston

Piston rings

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

Insufficient fuel during combustion

Insufficient air during combustion

Low temperature combustion

High temperature combustion

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

(c) Both 'A' and 'B'

(d) None of these

(b) Both valves are open

(a) Both valves are closed

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

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

Minimizes the brake fade

Reduces the stopping distance

Maintains directional control during braking by preventing the wheels from locking

Page 3 of 3

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

Suction power compression exhaust

Suction exhaust power compression

Suction compression power exhaust

Exhaust compression power suction

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

3

1

4

2

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

Tie rod

Steering wheel

Steering gearbox

Steering shaft

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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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