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Current Affairs January 2024

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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

Correct Answer :

A. Compression and oil control rings


Related Questions

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4

When a gear box has four forward speeds and one reverse speed, it is said to be a

A. 3-speed gear box

B. 4-speed gear box

C. 5-speed gear box

D. 6-speed gear box

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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

One effect of detonation is

A. Delay in ignition

B. Loss of power

C. Overheating of engine

D. Overcooling of engine

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4

If the valve clearances are excessively large, the problem that can arise is

A. Overheating of the engine

B. Incomplete valve closure

C. Fouling of spark plug by gasoline

D. None of these

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4

In vehicles with tilt steering, the steering column is pivoted in

A. Upper bracket

B. Lower bracket

C. Tilt bracket

D. Steering yoke joint

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4

The function of an oil control orifice is that it

A. Returns cylinder head lubricating oil to the oil pan at high speed

B. Turns oil into fine mist for spray lubrication

C. Regulates the pressure of engine oil supplied by the oil pump for the lubrication of cylinder head mechanism and other purposes

D. Removes impurities from cylinder head lubricating oil

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4

The gradient resistance to a vehicle having a mass of 980 kg moving on an incline of 10° is

A. 1.6694 N

B. 16.694 N

C. 166.94 N

D. 1669.4 N

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4

The negative 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

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 component that connects the steering rack to the knuckles is

A. Tie rod

B. Sector gear

C. Pivot

D. Spline

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4

The oil pump is driven by the

A. Camshaft

B. Alternator shaft

C. Crankshaft via drive belt

D. Crankshaft directly

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4

The coefficient of rolling resistance for a truck weighing 63,500 N is 0.018. The rolling resistance to the truck is

A. 1.143 N

B. 11.43 N

C. 114.3 N

D. 1143 N

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4

The mechanical efficiency (ηm) of an I.C. engine is equal to (where I.P. = Indicated power, B.P. = Brake power and F.P. = Frictional power)

A. I.P/B.P.

B. B.P/I.P.

C. B.P/F.P.

D. F.P/B.P.

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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 function of a proportioning control valve (PCV) in a brake system is to

A. Ensure that equal pressure is supplied to the front and rear brakes throughout every braking operation

B. Reduce the brake fluid pressure when the brakes approach their lockup point

C. Cause less brake fluid pressure to act on the front brakes than on the rear brakes when the fluid pressure exceeds a predetermined level

D. Cause less brake fluid pressure to act on the rear brakes than on the front brakes when the fluid pressure exceeds a predetermined level.

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4

The process of removing the burnt gases from the engine cylinder by the fresh charge coming into the engine cylinder from the crankcase, is known as

A. Cleaning

B. Priming

C. Scavenging

D. Detonation

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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

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4

The effect of having excess camber is

A. Excessive steering alignment torque

B. Hard steering

C. Too much traction

D. Uneven tyre wear

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4

The instrument used to check specific gravity of acid in a battery is

A. Hydrometer

B. Hygrometer

C. Anemometer

D. Multimeter

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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

The size of engine cylinder is referred in terms of its

A. Diameter and bore

B. Displacement and efficiency

C. Bore and stroke

D. Bore and length

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4

The combustion process in a Diesel engine is a

A. Constant volume process

B. Constant pressure process

C. Constant temperature process

D. Adiabatic process

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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

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

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

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 motion of the cam is transferred to the valves through

A. Pistons

B. Rocker arms

C. Camshaft pulley

D. Valve stems

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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

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

In Spark Ignition Engine

A. Only air is introduced into the cylinder

B. The mixture of air and fuel is introduced into the cylinder from carburettor

C. Both A and B

D. None of these