Home
Current Affairs January 2024

What is the correct answer?

4

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

Correct Answer :

D. All of these


Related Questions

What is the correct answer?

4

If the spark plug deposit indicates black coating of soot, it indicates that the engine has been generally operating on

A. Too lean mixture

B. Stoichiometric mixture

C. Most economical mixture

D. Too rich mixture

What is the correct answer?

4

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

A. 0.2 mm

B. 0.5 mm

C. 1 mm

D. 1.5 mm

What is the correct answer?

4

The piston compression rings are made of

A. Cast iron

B. Steel

C. Aluminium

D. Bronze

What is the correct answer?

4

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

What is the correct answer?

4

When the brake pedal free play is less than the specified value, then the

A. Brake drags

B. Brake fades

C. Vapour locking occurs in the brake lines

D. Antilock braking system malfunctions

What is the correct answer?

4

The advantage of having a tandem master cylinder arrangement in automobiles is that it

A. Enhances safety by serving two independent lines in a divided line brake circuit

B. Enhances safety by activating the brakes using vacuum pressure in the event of brake fluid loss

C. Supplies equal fluid pressure to each line of a divided line brake circuit, thereby preventing the brakes from dragging on one side

D. Boosts the brake fluid pressure to reduce the force required to depress the brake pedal

What is the correct answer?

4

The two kinds of piston rings are

A. Compression and oil control rings

B. Compression and sliding seal rings

C. Oil scrapper and oil control rings

D. Pressure and sealing rings

What is the correct answer?

4

The composition of the electrolyte in a fully charged battery is that

A. The electrolyte is pure distilled water

B. The electrolyte is pure sulphuric acid

C. The electrolyte is a mixture of 64% distilled water and 36% sulphuric acid by weight

D. The electrolyte is a mixture of 90% distilled water and 10% sulphuric acid by weight

What is the correct answer?

4

When the top of the wheel is tilted outward, then it is called

A. Positive camber

B. Negative camber

C. Positive caster

D. Negative caster

What is the correct answer?

4

In a four speed four stroke Diesel engine, the intake valve

A. Opens at T.D.C. and closes at B.D.C.

B. Opens at 20° before T.D.C. and closes at 35° after B.D.C.

C. Opens at 10° after T.D.C. and closes at 20° before B.D.C.

D. None of the above

What is the correct answer?

4

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

A. Steering wheel

B. Steering shaft

C. Steering gearbox

D. Tie rod

What is the correct answer?

4

A petrol engine of a car develops 125 Nm torque at 2700 r.p.m. The car is driven in second gear having gear ratio of 1.75. The final drive ratio is 4.11. If the overall transmission efficiency is 90%, then the torque available at the driving wheels is

A. 8.091 Nm

B. 80.91 Nm

C. 809.1 Nm

D. 8091 Nm

What is the correct answer?

4

The order in which effort applied to the steering wheel is transferred to the front wheel is

A. Steering wheel, steering gearbox, steering shaft, tie rod, steering knuckle, front wheels

B. Steering wheel, steering shaft, steering gearbox, tie rod, steering knuckle, front wheels

C. Steering wheel, steering shaft, steering gearbox, steering knuckle, tie rod, front wheels

D. Steering wheel, tie rod, steering gearbox, steering shaft, steering knuckle, front wheels

What is the correct answer?

4

The caster is called positive when the top of the king pin is inclined to the

A. Rear of the vehicle

B. Front of the vehicle

C. Left of the vehicle

D. Right of the vehicle

What is the correct answer?

4

The Diesel engines are also known as

A. Spark ignition (S.I.) engines

B. Compression ignition (C.I.) engines

C. Steam engines

D. None of these

What is the correct answer?

4

The component in the radiator of an automobile that increases the boiling point of water is

A. Drain plug

B. Water jacket

C. Vacuum valve

D. Pressure cap

What is the correct answer?

4

The Diesel engines as compared to petrol engines require

A. Bigger flywheel

B. Smaller flywheel

C. Same size of flywheel

D. No flywheel

What is the correct answer?

4

The aluminium alloy is used in cylinder blocks because

A. It is lighter and has good heat dissipation characteristics

B. Material cost is low

C. It does not require any cylinder liners

D. The piston is also made of aluminium alloy

What is the correct answer?

4

The engine oil level should be checked

A. Immediately after the ignition switch is turned off

B. While the engine is running

C. A few minutes after the ignition switch is turned off

D. While the engine is running at high idle speed

What is the correct answer?

4

The reconditioning process used to give cylinder bore surfaces a crosshatch pattern, is known as

A. Honing

B. Porous plating

C. Boring

D. Shot peening

What is the correct answer?

4

The purpose of transmission in an automobile is

A. To vary the speed of automobile

B. To vary the torque at the wheels

C. To vary the power of automobile

D. None of these

What is the correct answer?

4

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

A. 7 : 1

B. 8 : 1

C. 9 : 1

D. 10 : 1

What is the correct answer?

4

The rigid suspension is beneficial when

A. It is desired to reduce the unsprung mass

B. It is desired to have more flexibility in design

C. It is desired to improve tyre to ground contact characteristics

D. Large changes in load make it necessary to have a large suspension stroke

What is the correct answer?

4

The purpose of a cylinder head gasket is to

A. Prevent the combustion gases from leaking from the joint between the cylinder block and the cylinder head

B. Prevent engine oil from going into combustion chamber

C. Removes impurities from cylinder head lubricating oil

D. None of the above

What is the correct answer?

4

For the same maximum pressure and temperature

A. Diesel cycle is more efficient than Otto cycle

B. Otto cycle is more efficient than Diesel cycle

C. Both Otto cycle and Diesel cycle are equally efficient

D. None of the above

What is the correct answer?

4

If a tyre is designated as 175/65 R-14 82-S, then the aspect ratio for the tyre is

A. 175

B. 65

C. 14

D. 82

What is the correct answer?

4

The specific gravity of acid in a fully charged battery is generally

A. 1.00

B. 1.28

C. 1.82

D. 2.81

What is the correct answer?

4

The starter motor is driven by

A. Chain drive

B. Gear drive

C. Flat belt drive

D. V-belt drive

What is the correct answer?

4

The sequence in which the force is transmitted through a brake system when the brake pedal is depressed is

A. Brake pedal, master cylinder, brake lines, vacuum servo mechanism, brake pads

B. Brake pedal, vacuum servo mechanism, master cylinder, brake lines, brake pads

C. Brake pedal, master cylinder, vacuum servo mechanism, brake lines, brake pads

D. Brake pedal, brake lines, vacuum servo mechanism, master cylinder, brake pads

What is the correct answer?

4

The octane rating of petrol commercially available is

A. 85-95

B. 95-100

C. 100-110

D. 110-125