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Current Affairs January 2024

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4

Two general types of tyres are

A. Tube type and tubeless

B. Solid and tubeless

C. Air and pneumatic

D. Split rim and drop centre

Correct Answer :

A. Tube type and tubeless


Related Questions

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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

A clutch is usually designed to transmit maximum torque which is

A. Equal to the maximum engine torque

B. 80 % of the maximum engine torque

C. 150 % of the maximum engine torque

D. None of these

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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 rolling resistance is because of the friction between the

A. Wheel rim and tyre

B. Tyre and the road surface

C. Wheel rim and road surface

D. None of these

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

A. Clutch

B. Differential

C. Flywheel

D. Torque converter

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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

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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

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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

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4

The advantage of the fuel injection system over the carburettor system is

A. Improved fuel efficiency

B. Improved emission

C. Improved power output

D. All of these

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4

The gear shift lever requires two separate motions to shift gears, and the first movement

A. Moves the synchronizer

B. Selects the synchronizer

C. Meshes the gears

D. Operates the clutch

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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 antiknock property of compression ignition engine fuel can be improved by adding

A. Tetraethyl lead

B. Trimethyl pentane

C. Amyl nitrate

D. Hexadecane

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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

In a single dry plate clutch, torsional vibrations are absorbed by

A. Coil springs known as torsional springs

B. Cushion springs

C. Central hub

D. Clutch pedal

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4

The tilting of the front wheels away from the vertical, when viewed from the front of the car, is called

A. Camber

B. Caster

C. Toe in

D. Toe out

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4

Instead of valves, the ports are used in case of

A. Four stroke I.C. engines

B. Two stroke I.C. engines

C. V6 engines

D. None of these

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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 operation of removing trapped air from the hydraulic braking system is known as

A. Trapping

B. Tapping

C. Bleeding

D. Cleaning

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4

Odometer is an instrument used for measurement of

A. Power

B. Fuel consumption

C. Engine r.p.m.

D. Distance

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4

In a Diesel engine, the function of a fuel injector is to

A. Mix the fuel and air

B. Ignite the air-fuel mixture

C. Provide flame front for ignition

D. Spray atomized fuel in the cylinder

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4

The purpose of a balancer shaft is to

A. Balance the timing in the movement of the two groups of pistons

B. Increase inertia force of the rotating crankshaft

C. Reduce vibrations caused by the crankshaft rotation

D. Adjusts the timing of the intake and exhaust valve openings

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4

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

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4

If the air-fuel mixture ignites before the spark takes place at spark plug, the condition is called

A. Detonation

B. Ignition

C. Pre-ignition

D. Rumble

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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

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4

In which of the following conditions, the idle CO percentage should be measured with the vehicle?

A. Headlights and other electrical devices are switched off

B. Headlights and other electrical devices are switched on

C. Headlights and other lights are switched off

D. Headlights are switched on

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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

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

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4

The commonly used antifreeze solution in automobiles is

A. Carbon disulphide

B. Ethylene glycol

C. Ammonium chloride

D. Freon-12

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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