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Current Affairs January 2024

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4

The basic purpose of providing caster angle on wheels is to

A. Prevent uneven tyre wear

B. Maintain directional control

C. Bring the road contact of the tyre under the point of load

D. Compensate for wear in the steering linkage

Correct Answer :

B. Maintain directional control


Related Questions

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4

In a petrol engine, the high voltage for spark plug is in the order of

A. 1000 volts

B. 2000 volts

C. 11 kilovolts

D. 22 kilovolts

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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

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4

The materials used for cylinder block are

A. Cast iron and steel

B. Cast iron and aluminium alloy

C. Steel and aluminium alloy

D. Brass and steel

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4

The specific gravity of petrol is about

A. 0.75

B. 0.85

C. 0.95

D. 1.25

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4

The connecting rods are generally made of ________ shaped crosssection.

A. I

B. C

C. L

D. H

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4

In a four cylinder inline engine, the number of firing strokes in one revolution of the crank is

A. 1

B. 2

C. 3

D. 4

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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

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 rating of C.I. engine fuel (Diesel) is given by

A. Octane number

B. Performance number

C. Cetane number

D. None of these

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4

The power actually developed inside the engine cylinder is called as

A. Indicated power

B. Brake power

C. Frictional power

D. None of these

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4

In case of a Diesel car, the pressure at the end of compression is of the order of

A. 15 bar

B. 25 bar

C. 35 bar

D. 45 bar

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4

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

A. 45°

B. 60°

C. 90°

D. 130°

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4

A worm gear is used as the pinion for the rack and pinion type of steering gearbox, because it

A. Improves steering comfort when steering wheel is turned to effect small changes in the direction of forward motion

B. Allows the steering wheel to be turned by a greater amount when steering

C. Makes the steering more responsive

D. Reduces the amount of kickback for large steering angles

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4

The main characteristics of a maintenance free (MF) battery is that

A. A maintenance free battery requires little maintenance during normal use and it is sufficient to add water instead of an electrolyte containing sulphuric acid

B. A maintenance free battery has a relatively short shelf life when compared with standard batteries

C. Since it is sealed, the water in maintenance free battery is not lost through evaporation thus accordingly it is not necessary to top up the cells with water

D. Recharging of a maintenance free battery is neither required nor possible

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4

Wheel base of a vehicle is the

A. Distance between the centres of the front and rear wheels

B. Distance between the centres of the front tyres

C. Distance between the centres of the rear tyres

D. Extreme length of the vehicle

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4

Petrol that detonates easily is called

A. High octane petrol

B. Low octane petrol

C. Unleaded petrol

D. Blended fuel

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4

An oil filter bypass valve opens when the

A. Engine is cold

B. Engine overheats

C. Oil filter becomes clogged

D. Engine runs at high speed

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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

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4

The Diesel engine works on

A. Otto cycle

B. Carnot cycle

C. Diesel cycle

D. Rankine cycle

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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

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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

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4

Cushioning springs in clutch plate reduces

A. Vehicle speed

B. Torsional vibrations

C. Jerky starts

D. None of these

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4

The Diesel engines as compared to petrol engines require

A. Bigger flywheel

B. Smaller flywheel

C. Same size of flywheel

D. No flywheel

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4

Valve overlap is the number of degrees of camshaft rotation during which

A. Both valves are closed

B. Both valves are open

C. Both 'A' and 'B'

D. None of these

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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

An overinflated tyre will wear the tread most near the

A. Edges

B. Corners

C. Centre

D. None of these

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4

The fuel that detonates easily, is

A. N-heptane

B. Iso-octane

C. Benzene

D. Alcohol

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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

In Diesel engines, during suction stroke, ________ is drawn in the cylinder.

A. Air and fuel

B. Only fuel

C. Only air

D. None of these

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4

The compression ratio in petrol engine is kept less than in Diesel engine because

A. It makes petrol engines lighter

B. Higher or equivalent compression ratio in petrol engines is not possible due to pre-ignition

C. Less compression ratio gives better performance

D. It is just customary to have less compression ratio in petrol engines