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Current Affairs January 2024

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4

The petrol engines are also known as

A. Spark ignition (S.I.) engines

B. Compression ignition (C.I.) engines

C. Steam engines

D. None of these

Correct Answer :

A. Spark ignition (S.I.) engines


Related Questions

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4

The number of exhaust manifolds in a V6 engine is

A. One

B. Two

C. Four

D. Eight

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4

In bias ply tyres

A. All plies run parallel to one another

B. Belts of steel mesh are used in the tyres

C. One ply layer runs diagonally one way and another layer runs diagonally the other way

D. All of the above

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4

The difference between DOT 3 and DOT 4 brake fluids is

A. DOT 4 fluids have a higher boiling point than DOT 3 fluid

B. DOT 4 fluids have a lower boiling point than DOT 3 fluid

C. DOT 3 and DOT 4 fluids have the same boiling point, but DOT 4 fluid has a longer service life

D. DOT 4 fluid is more resistant to freezing than DOT 3 fluid

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4

The air resistance to a car at 20 kmph is R. The air resistance at 40 kmph will be

A. R

B. 2 R

C. 4R

D. 4 R²

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4

The positive plates of a lead acid battery has

A. Lead peroxide (PbO₂)

B. Spongy lead (Pb)

C. Lead sulphate (PbSO₄)

D. Sulphuric acid (H₂SO₄)

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4

The condition that results in large quantities of HC emission is

A. High temperature combustion

B. Incomplete combustion

C. Low temperature combustion

D. High atmospheric temperature combustion

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4

The major purpose of an electronically controlled automatic transmission is that this type of transmission

A. Eliminates gear clutches

B. Eliminates the gear shaft lever

C. Reduces the number of automatic transmission components

D. Reduces shift shock and achieves more efficient transmission of engine torque

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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

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4

In a Diesel engine, the fuel is ignited by

A. An electric spark

B. The heat of compression

C. The hot exhaust

D. None of these

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4

The most commonly used supplementary restraint system (SRS) component is

A. Seat belt

B. Brake

C. Airbag

D. Steering

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4

The negative terminal post on the top of a battery is

A. Smaller than the positive terminal post

B. Larger than the positive terminal post

C. Of the same size as the positive terminal post

D. None of these

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4

The minimum parking brake force is generally ________ of gross vehicle mass (GVM).

A. 5 %

B. 10 %

C. 15 %

D. 20 %

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4

Bead wires are made of

A. Steel

B. Copper

C. Zinc

D. Aluminium

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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

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4

The crankcase dilution means

A. Dilution of fuel in the crankcase

B. Dilution of oil by water in the crankcase

C. Dilution of lubrication oil by fuel in the crankcase

D. Dilution of mixture passing through crankcase in two stroke engines

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4

Incorrect steering axis inclination (S.A.I.) causes

A. Tendency to assume toe-out orientation

B. Generation of a braking effect at tight corners

C. Poor recovery of the steering wheel after making a turn

D. The vehicle to pull to the side of lesser inclination

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4

A heat treated glass generally used in automobiles bursts into ________ upon cracking,

A. Sharp edged fragments

B. Small particles

C. Large particles

D. None of these

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4

The forced fed lubrication system means that the oil is delivered to the engine by

A. Gravity

B. The pressure created by the oil pump

C. Splashing action of the crankshaft

D. None of these

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4

Free pedal play in car clutches is about

A. 15 mm

B. 25 mm

C. 40mm

D. 60 mm

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4

The parking brake generally acts on

A. Front wheels

B. Rear wheels

C. Front and rear wheels

D. Propeller shaft

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4

The lower cylindrical portion of the piston which improves piston cooling performance is called

A. Piston crown

B. Connecting rod

C. Piston pin boss

D. Piston skirt

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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

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4

The effect of vapour locking on the brake performance is that the

A. Brakes function more effectively

B. Brakes fail completely

C. Brake operation is delayed after depression of the brake pedal

D. Vapour locking has no effect on brake performance

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4

The main purpose of an engine's air cleaner is that it

A. Controls the engine's air intake volume

B. Reduces the engine's air intake noise

C. Prevents rain water from entering the engine

D. Prevents dust and other foreign matter from entering the engine

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4

The condition that causes vapour locking in a brake system is

A. Overheating of the fluid due to frequent brake application

B. Overcooling of the brakes during high speed driving

C. Keeping the vehicle without use for an extended period

D. An excessively high engine speed on a downhill road

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4

A battery can be charged by

A. Adding distilled water

B. Adding sulphuric acid

C. Applying voltage in the reverse direction to that of charging

D. Applying a voltage in the same direction to that of charging

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4

The auto ignition in a spark ignition engine means

A. Automatic ignition of the charge at the end of compression

B. Ignition induced by the passage of a spark

C. Ignition of the charge before the passage of flame front

D. Ignition induced to supplement the process of normal combustion

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4

The cetane rating of Diesel fuel is in the order of

A. 25

B. 45

C. 70

D. 90

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4

The sequence order of events in a four stroke engine is

A. Suction exhaust power compression

B. Suction power compression exhaust

C. Suction compression power exhaust

D. Exhaust compression power suction

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4

Which of the following parameter can be adjusted by modifying the tie rod attachment length?

A. Camber

B. Caster

C. Toe

D. Steering gear ratio