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Current Affairs January 2024

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4

The connecting rod lower end is connected to the relevant ________ of crankshaft.

A. Big end

B. Crank arm

C. Journal

D. Small end

Correct Answer :

C. Journal


Related Questions

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4

The ball joints are used on the tie rod ends, because they

A. Reduce the amount of noise generated

B. Reduce the amount of sliding resistance

C. Can deal with movement of the suspension both vertically and in other directions

D. Improve the force transmission speed

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4

Engine misfiring is likely to result from

A. Spark plug gap too small

B. Spark plug gap too wide

C. Vapours lock in the fuel only

D. Incorrect fuel air mixture

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4

The aspect ratio (expressed in percentage) of the tyre is defined as the ratio of

A. Section width to section height

B. Section height to section width

C. Wheel diameter to section height

D. Wheel diameter to section width

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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

An engine has a clearance volume of 100 cm³ and a swept volume of 800 cm³. The compression ratio is

A. 7 : 1

B. 8 : 1

C. 9 : 1

D. 10 : 1

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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 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

Which one of the following statement correctly describes the construction of a bevel gear type differential?

A. The drive shafts are splined to the differential carrier.

B. The left side gear and the differential carrier rotate in constant unison.

C. The differential carrier houses differential pinion gears and side gears; each pinion gear meshes with a different side gear.

D. The differential carrier houses differential pinion gears and side gears

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4

The lower cylindrical portion of the piston which improves piston cooling performance is called

A. Piston crown

B. Connecting rod

C. Piston pin boss

D. Piston skirt

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4

During braking, the brake shoe is moved outward to force the lining against the

A. Wheel piston or cylinder

B. Anchor pin

C. Brake drum

D. Wheel rim or axle

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4

In a four speed four stroke Diesel engine, the intake valve

A. Opens at T.D.C. and closes at B.D.C.

B. Opens at 20° before T.D.C. and closes at 35° after B.D.C.

C. Opens at 10° after T.D.C. and closes at 20° before B.D.C.

D. None of the above

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4

The braking control type traction control system (TCS) generally operates in the speed range of

A. Less than 20 kmph

B. Less than 40 kmph

C. Less than 60 kmph

D. More than 60 kmph

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4

The main function of a master cylinder is to

A. Adjust the extent of brake pedal free play

B. Boost the force applied to brake pedal

C. Convert brake pedal force into hydraulic pressure

D. Ensure that all the wheel brakes are supplied with the same amount of fluid pressure

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4

The most commonly used power plant in automobiles is

A. Gas turbine

B. I.C. engine

C. Battery

D. None of these

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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

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

The maximum torque multiplication ratio in a torque converter is about

A. 2.5

B. 10

C. 25

D. 40

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4

Damper in an automobile is used to

A. Absorb the energy

B. Dissipate the energy

C. Release the energy

D. Increase the energy

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4

Tachometer in a vehicle measures

A. Speed

B. Distance

C. Engine r.p.m.

D. Fuel consumption

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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 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 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

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 octane number of compressed natural gas (CNG) is

A. 90

B. 100

C. 110

D. 120

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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 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 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 main function of the tread pattern on tyre is that

A. The tread grooves pass air between the tyre and road surface, thereby preventing tyre from overheating

B. The crests between the tread grooves absorb road noise

C. In wet conditions, the tread grooves expel water that is drawn between the tyre and road surface

D. The tread pattern protects the tyre's inner carcass from small stones and pieces of glass

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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 clutch is located between the transmission and the

A. Engine

B. Rear axle

C. Propeller shaft

D. Differential