Automobile Engineering MCQ Questions & Answers

11

The function of an alternator in an automobile is to

A) Supply electric power B) Converts mechanical energy into electrical energy C) Continually recharges the battery D) Partly converts engine power into electric power

Discuss

Answer & Solution

Answer: Option C

Solution:

Alternators are used in modern automobiles to charge the battery and to power the electrical system when its engine is running.

12

The crankshaft of a typical inline four cylinder engine has ________ balance weights.

A) 12 B) 4 C) 16 D) 8

Discuss

Answer & Solution

Answer: Option D

Solution:

The crankshaft of a typical inline four cylinder engine has 8 balance weights.

13

In comparison with a radial tyre, one advantage of a bias ply tyre is

A) Longer life B) Lower rolling resistance C) Smoother ride at low speeds D) None of these

Discuss

Answer & Solution

Answer: Option C

Solution:

In comparison with a radial tyre one advantage of a bias ply tyre is Smoother ride at low speeds

14

The power source for a brake booster is

A) Exhaust manifold pressure B) Electricity C) The pressure difference between the atmospheric pressure and the vacuum pressure in the intake manifold D) Hydraulic pump

Discuss

Answer & Solution

Answer: Option C

Solution:

The power source for a brake booster is the pressure difference between the atmospheric pressure and the vacuum pressure in the intake manifold

15

The path taken by intake air is

A) Carburettor (or throttle body) air cleaner intake manifold intake ports cylinders B) Air cleaner carburettor (or throttle body) intake ports intake manifold cylinders C) Air cleaner intake manifold carburettor (or throttle body) intake ports cylinders D) Air cleaner carburettor (or throttle body) intake manifold intake ports cylinders

Discuss

Answer & Solution

Answer: Option D

Solution:

The path taken by intake air is Air cleaner carburettor (or throttle body) intake manifold intake ports cylinders

16

Petrol that detonates easily is called

A) High octane petrol B) Low octane petrol C) Unleaded petrol D) Blended fuel

Discuss

Answer & Solution

Answer: Option B

Solution:

The higher the octane number, the more compression the fuel can withstand before detonating . Therefore, high compressibility of the fuel matters mainly for gasoline engines.
Use of gasoline with lower octane numbers may lead to the problem of engine knocking

17

The device for smoothening out the power impulses from the engine is called

A) Clutch B) Differential C) Flywheel D) Torque converter

Discuss

Answer & Solution

Answer: Option C

Solution:

A flywheel is a mechanical device specifically designed to efficiently store rotational energy.
Flywheels resist changes in rotational speed by their moment of inertia.
The amount of energy stored in a flywheel is proportional to the square of its rotational speed

18

The compression ratio of a petrol engine is nearly

A) 4 : 1 B) 8 : 1 C) 15 : 1 D) 20 : 1

Discuss

Answer & Solution

Answer: Option B

Solution:

The compression ratio of a petrol engine is nearly 8 : 1.

19

The effect of having excess camber is

A) Excessive steering alignment torque B) Hard steering C) Too much traction D) Uneven tyre wear

Discuss

Answer & Solution

Answer: Option D

Solution:

Excessive camber angle can lead to increased tire wear and impaired handling.
With these control arms installed,
tire camber can be effectively changed by simply moving the tires.

20

In automobiles G.V.W. refers to

A) Gross vehicle width B) Gross vehicle weight C) Gross vehicle wheel base D) Gross vehicle wheel track

Discuss

Answer & Solution

Answer: Option B

Solution:

The gross vehicle weight rating (GVWR), is the maximum operating weight/mass of a vehicle as specified by the manufacturer including the vehicle's chassis, body, engine, engine fluids, fuel, accessories, driver, passengers, and cargo but excluding that of any trailers

Automobile Engineering MCQ Questions & Answers | Mechanical Engineering