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Current Affairs January 2024

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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

Correct Answer :

D. 1669.4 N


Related Questions

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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

The advantage of a tubeless tyre over tube type tyre is

A. Slow air leakage

B. Better fuel efficiency

C. Less chances of running flat

D. All of these

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4

The petrol engine works on

A. Otto cycle

B. Carnot cycle

C. Diesel cycle

D. Rankine cycle

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4

The function of a second ring is that it is a

A. Back up compression ring which will work in place of the top ring when it is broken

B. Compression ring and aids the top ring in sealing and cooling

C. Back up oil control ring which will work in place of the bottom ring when it is broken

D. Cushion ring which prevents piston slap and knock

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4

The material generally used for cylinder sleeves is

A. Aluminium

B. Ceramic

C. Cast iron

D. Fibre reinforced plastic

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4

The most accurate ignition system of a spark ignition engine is

A. Magneto system

B. Battery system

C. Electronic control unit system

D. Magneto and electronic system

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4

The function of a first compression ring (top ring) is that it

A. Increases the combustion temperature

B. Creates swirl

C. Maintains a seal and prevents the fuel leakage

D. Maintains a seal and prevents escape of burned gases and loss of pressure in the combustion chamber

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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 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

The function of an alternator in an automobile is to

A. Supply electric power

B. Converts mechanical energy into electrical energy

C. Continually recharges the battery

D. Partly converts engine power into electric power

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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 discharged lead acid battery has on its plates

A. Lead peroxide (PbO₂)

B. Spongy lead (Pb)

C. Lead sulphate (PbSO₄)

D. Sulphuric acid (H₂SO₄)

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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 seat belt tensioners are built in the

A. Front seats

B. Shoulder anchors

C. Seat belt retractors

D. Seat belt buckles

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4

The brake warning light warns the driver of

A. Water in the master cylinder

B. Air in the hydraulic system

C. Failure of the primary or secondary circuit of hydraulic system

D. Power brake failure

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4

A maintenance free battery

A. Has lead-antimony plate grid

B. Has lead-calcium plate grid

C. Does not contain acid

D. Does not contain water

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4

The specific gravity of Diesel is about

A. 0.65

B. 0.75

C. 0.85

D. 0.95

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4

The valve overlap in four stroke petrol engines is approximately

A. 30°

B. 60°

C. 90°

D. 120°

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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

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 formula for Isooctane is

A. C8H18

B. C7H17

C. C6H18

D. C7H18

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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 function of a governor in automobiles is to

A. Limit the power

B. Limit the vehicle speed

C. Maintain constant engine speed

D. Maximise the fuel economy

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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

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

In a ventilated disc brake

A. A duct directs air towards the caliper for cooling while the vehicle is moving

B. Caliper is covered with cooling fins

C. Disc contains many small holes for optimum cooling performance

D. Disc contains radial vanes between its rubbing surfaces for optimum cooling performance

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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

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

Highest useful compression ratio (HUCR) is the highest compression ratio at which the

A. Engine can run

B. Engine gives maximum output

C. Engine is most efficient

D. Fuel can be used in a test engine without knocking

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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