Automobile Engineering MCQs

Question 1

An engine has a clearance volume of 100 cm3 and a swept volume of 800 cm3. The compression ratio is

Accepted Answer

9 : 1

Answer

7 : 1

Answer

8 : 1

Answer

10 : 1

Question 2

In a square type engine

Accepted Answer

Stroke length and cylinder bore are same

Answer

Geometrical shape is square

Answer

Diameter and length of piston are same

Answer

Two cylinders are placed horizontal and two vertical

Question 3

The function of a proportioning control valve (PCV) in a brake system is to

Accepted Answer

Cause less brake fluid pressure to act on the rear brakes than on the front brakes when the fluid pressure exceeds a predetermined level

Answer

Ensure that equal pressure is supplied to the front and rear brakes throughout every braking operation

Answer

Reduce the brake fluid pressure when the brakes approach their lockup point

Answer

Cause less brake fluid pressure to act on the front brakes than on the rear brakes when the fluid pressure exceeds a predetermined level

Question 4

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

Accepted Answer

Steering gearbox

Answer

Steering wheel

Answer

Steering shaft

Answer

Tie rod

Question 5

The two rows of cylinders in a 'V' type engine are generally arranged at

Accepted Answer

60°

Answer

45°

Answer

90°

Answer

130°

Question 6

During suction stroke, the inside pressure of cylinder is

Accepted Answer

Less than the atmospheric pressure

Answer

More than the atmospheric pressure

Answer

Equal to the atmospheric pressure

Answer

None of these

Question 7

The function of an oil control orifice is that it

Accepted Answer

Regulates the pressure of engine oil supplied by the oil pump for the lubrication of cylinder head mechanism and other purposes

Answer

Returns cylinder head lubricating oil to the oil pan at high speed

Answer

Turns oil into fine mist for spray lubrication

Answer

Removes impurities from cylinder head lubricating oil

Question 8

The piston compression rings are made of

Accepted Answer

Cast iron

Answer

Steel

Answer

Aluminium

Answer

Bronze

Question 9

The air gap between the central electrode and ground (or side) electrode of a spark plug is around

Accepted Answer

1 mm

Answer

0.2 mm

Answer

0.5 mm

Answer

1.5 mm