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Automobile Engineering IMP MCQ | All MCQ | 2021

Automobile Engineering MCQ 

1. The temperature indicating instrument in vehicles indicates the temperature of

(A) Engine piston

(B) Engine cylinder

(C) Lubricating oil

(D) Jacket cooling water

2. Two general types of tyres are

(A) Tube type and tubeless

(B) Solid and tubeless

(C) Air and pneumatic

(D) Split rim and drop centre

3. How many cells are used in a 12 volt car battery?

(A) 2

(B) 4

(C) 6

(D) 8

4. The motion of the cam is transferred to the valves through

(A) Pistons

(B) Rocker arms

(C) Camshaft pulley

(D) Valve stems

5. The power actually developed inside the engine cylinder is called as

(A) Indicated power

(B) Brake power

(C) Frictional power

(D) None of these

6. If the air-fuel mixture in a spark ignition engine is too rich, then air-fuel ratio is about

(A) 17:1

(B) 15:1

(C) 13:1

(D) 10:1

7. Petrol that detonates easily is called

(A) High octane petrol

(B) Low octane petrol

(C) Unleaded petrol

(D) Blended fuel

8. The advantage of a tubeless tyre over tube type tyre is

(A) Slow air leakage

(B) Better fuel efficiency

(C) Less chances of running flat

(D) All of these

9. In a single dry plate clutch, torsional vibrations are absorbed by

(A) Coil springs known as torsional springs

(B) Cushion springs

(C) Central hub

(D) Clutch pedal

10. The battery is an electrochemical device, which means battery

(A) Makes chemicals by mechanical means

(B) Uses Chemical actions to provide electricity

(C) Has curve plates instead of flat plates

(D) Does not use an electrolyte

11. An overinflated tyre will wear the tread most near the
    (A) Edges
    (B) Corners
    (C) Centre
    (D) None of these
12. The calorific value of Diesel is about
    (A) 36.5 MJ/kg
    (B) 38.5 MJ/kg
    (C) 42.5 MJ/kg
    (D) 45.5 MJ/kg
13. The function of oil control rings is that it
    (A) Lubricates the cylinder wall by releasing oil from its hole
    (B) Keeps the cylinder wall lubricated by holding oil in its channel
    (C) Prevents engine oil from going into the combustion chamber and returns excess lubricating oil off the cylinder wall through the return holes in the piston to the oil pan
    (D) Maintains a seal and prevents escape of burned gases and oil leakage
14. Two advantages of using helical gears rather than spur gears in a transmission system are
    (A) Strength and cost
    (B) Strength and less end thrust
    (C) Noise level and strength
    (D) Noise level and economy
15. The correct flow of power through the drive train is
    (A) Engine drive shafts, clutch, main shaft, counter shaft, final driven gear, wheels
    (B) Engine clutch, main shaft, counter shaft, final driven gear, drive shafts, wheels
    (C) Engine clutch, counter shaft, main shaft, final driven gear, drive shafts, wheels
    (D) Engine main shaft, counter shaft, clutch, final driven gear, drive shafts, wheels
16. The painting of automobiles is done to
    (A) Prevent rust from growing on the body
    (B) Improve its external appearance
    (C) Retain the characteristics of steel for long
    (D) All of these
17. The calorific value of petrol is about
    (A) 36.5-38.5 MJ/kg
    (B) 39.4-42.5 MJ/kg
    (C) 42.7-43.5 MJ/kg
    (D) 45.5-47 MJ/kg
18. The coefficient of friction for the clutch facing is approximately
    (A) 0.1
    (B) 0.4
    (C) 0.8
    (D) 1.2
19. The air resistance to a car at 20 kmph is R. The air resistance at 40 kmph will be
    (A) R
    (B) 2R
    (C) 4R
    (D) 4R²
20. The stroke of an engine is the
    (A) Volume of the cylinder
    (B) Length of the connecting rod
    (C) Internal diameter of the cylinder
    (D) Distance between T.D.C. and B.D.C.
21. The braking control type traction control system (TCS) generally operates in the speed range of
    (A) Less than 20 kmph
    (B) Less than 40 kmph
    (C) Less than 60 kmph
    (D) More than 60 kmph
22. The function of a first compression ring (top ring) is that it
    (A) Increases the combustion temperature
    (B) Creates swirl
    (C) Maintains a seal and prevents the fuel leakage
    (D) Maintains a seal and prevents escape of burned gases and loss of pressure in the combustion chamber
23. The component that connects the steering rack to the knuckles is
    (A) Tie rod
    (B) Sector gear
    (C) Pivot
    (D) Spline
24. The cetane number of a Diesel fuel is a measure of
    (A) Volatility
    (B) Viscosity
    (C) Ignition quality
    (D) Delay period
25. In petrol engines, during suction stroke, _________ is drawn in the cylinder

           (A) Air and fuel
    (B) Only fuel
    (C) Only air
    (D) None of these
26. The main feature of Macpherson strut suspension is that
    (A) The vertical size of the suspension can be made more compact
    (B) Non vertical external forces are supported by the suspension arms
    (C) The unsprung mass in lighter
    (D) The assembly is slightly more complicated in design
27. The capacity of a battery is usually expressed in terms of
    (A) Volts
    (B) Amperes
    (C) Weight
    (D) Ampere hours
28. The most commonly used power plant in automobiles is
    (A) Gas turbine
    (B) I.C. engine
    (C) Battery
    (D) None of these
29. In a square type engine
    (A) Geometrical shape is square
    (B) Diameter and length of piston are same
    (C) Two cylinders are placed horizontal and two vertical
    (D) Stroke length and cylinder bore are same
30. The path taken by intake air is
    (A) Carburetor (or throttle body) air cleaner intake manifold intake ports cylinders
    (B) Air cleaner carburetor (or throttle body) intake ports intake manifold cylinders
    (C) Air cleaner intake manifold carburetor (or throttle body) intake ports cylinders
    (D) Air cleaner carburetor (or throttle body) intake manifold intake ports cylinders



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