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Current Affairs January 2024

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4

The main task of a battery in automobiles is to

A. Supply electricity to the alternator

B. Act as a reservoir or stabilizer of electricity

C. Supply electricity to the vehicle's electrical system at all times while the engine is running

D. Supply a large amount of power to turn the starter motor when the engine is being started

Correct Answer :

D. Supply a large amount of power to turn the starter motor when the engine is being started


Related Questions

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The most effective method of controlling S.I. engine exhaust emission is by

A. Recirculating exhaust

B. Using catalytic converter

C. Using some additives in the fuel

D. None of these

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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 best fuels for compression ignition engines are

A. Straight chain paraffin

B. Aromatics

C. Branched chain paraffin

D. Naphthalene

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4

The heat transfer from coolant to air in the radiator of an automobile engine takes place by

A. Radiation only

B. Convention only

C. Convection and radiation

D. Conduction, convection and radiation

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4

An imbalance wheel during vehicle operation

A. Makes large noise when its heavy point hits the road surface

B. Deflects in the vehicle's longitudinal direction

C. Bounces vertically or deflects from side to side (as seen from front or rear)

D. Creates a standing wave

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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 acid used in automobile battery is

A. Hydrochloric acid

B. Hydrofluoric acid

C. Nitric acid

D. Sulphuric acid

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4

The valve tappet clearance is measured by

A. Screw pitch gauge

B. Engineering scale

C. Feeler gauge

D. Vernier caliper

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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 cetane number of a Diesel fuel is a measure of

A. Volatility

B. Viscosity

C. Ignition quality

D. Delay period

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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

The basic characteristics of a brake fluid is

A. A high boiling point

B. Low viscosity

C. Compatibility with rubber and metal parts

D. All of these

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4

The main merit of a multi cylinder type cylinder sleeve is

A. Smaller engine dimensions

B. Better cooling efficiency

C. High rigidity

D. None of these

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4

When indicated power (I.P.) and frictional power (F.P.) are known, we can calculate

A. Brake power

B. Compression ratio

C. Specific air consumption

D. Mean effective pressure

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4

The condition that results in large quantities of CO emission is

A. Insufficient air during combustion

B. Insufficient fuel during combustion

C. Low temperature combustion

D. High temperature combustion

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4

The engine oil is stored in __________ when the engine is not running.

A. Oil pan

B. Cylinder head

C. Oil pump

D. Separate oil tank

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4

The three basic cylinder arrangements for automotive engines are

A. Flat, radial, and V

B. In a row, in line, and opposed

C. In line, V, and opposed

D. V, double row, and opposed

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4

A basic difference between the spark ignition engine and the Diesel engine is that the

A. Diesel engine compresses air alone instead of an air-fuel mixture

B. Air temperature ignites the fuel in the Diesel engine

C. Fuel is sprayed into the combustion chamber in the Diesel engine as the piston nears T.D.C. on the compression stroke

D. All of the above

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4

A three way catalytic converter

A. Re-circulates exhaust gases

B. Burns fuel vapour gases

C. Reduces N₂, H₂O, and CO₂ emission levels

D. Removes CO, HC, and NO₂ from the exhaust gasses passing through it

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4

The boiling point of Diesel fuel is in the range of

A. 70°C to 100°C

B. 100°C to 120°C

C. 120°C to 180°C

D. 180°C to 360 °C

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4

The component of the oil filter that prevents the passage of metal particles and sludge is

A. Element

B. Relief valve

C. Check valve

D. Case

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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

In a four wheel drive (4WD), the numbers of gear boxes are

A. 1

B. 2

C. 3

D. 4

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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

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4

The brake pedal during ABS operation

A. Is pushed upward forcefully

B. Pedal stroke becomes longer

C. Transmits slight kickback to the driver's foot

D. All of the above

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4

The characteristic that is enhanced by the use of cylinder sleeves is

A. Cooling efficiency

B. Resistance to wear

C. Lubrication performance

D. None of these

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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

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4

In an engine, the temperature of the piston will be more at the

A. Crown of the piston

B. Skirt of the piston

C. Piston walls

D. Piston rings

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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

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4

The characteristic that is enhanced by the honing of cylinder sleeves inner surface is

A. Cooling efficiency

B. Resistance to wear

C. Lubrication performance

D. None of these