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Current Affairs January 2024

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4

The fuel pump of a programmed fuel injection (PFI) system operate for two seconds when the ignition is turned to the start position to

A. Enable the pump's fault diagnosis function to operate

B. Warm up and lubricate the pump

C. Supplies a large amount of fuel and thereby creates a choke effect

D. Pressurise the fuel system before the engine is started

Correct Answer :

D. Pressurise the fuel system before the engine is started


Related Questions

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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

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

Which one of the following statements correctly describes the construction of a planetary gear type differential?

A. The six planetary pinions rotate in constant mesh with the internal gears.

B. One drive shaft is splined to the central gear and the other to the planetary gear.

C. Each planetary pinion gear meshes with both the central gear and the internal gear.

D. The internal gear is fixed to the planetary gear.

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4

The capacity of a battery is usually expressed in terms of

A. Volts

B. Amperes

C. Weight

D. Ampere hours

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4

Incorrect steering axis inclination (S.A.I.) causes

A. Tendency to assume toe-out orientation

B. Generation of a braking effect at tight corners

C. Poor recovery of the steering wheel after making a turn

D. The vehicle to pull to the side of lesser inclination

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4

The exhaust gas from petrol engine contains

A. Petrol vapours

B. Water vapours

C. Carbon monoxide

D. All of these

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

A. Big end

B. Crank arm

C. Journal

D. Small end

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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

In automobiles G.V.W. refers to

A. Gross vehicle width

B. Gross vehicle weight

C. Gross vehicle wheel base

D. Gross vehicle wheel track

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4

The function of oil control rings is that it

A. Lubricates the cylinder wall by releasing oil from its hole

B. Keeps the cylinder wall lubricated by holding oil in its channel

C. Prevents engine oil from going into the combustion chamber and returns excess lubricating oil off the cylinder wall through the return holes in the piston to the oil pan

D. Maintains a seal and prevents escape of burned gases and oil leakage

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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 function of a connecting rod is

A. To turn the flywheel

B. To drive the drive plate

C. To drive the fuel pump

D. To transmit motion of the piston to the crankshaft

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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

When the front wheels of a vehicle are locked during braking, then

A. Stopping distance becomes extremely long

B. Front tyres skid across the road surface, and the vehicle spins around

C. Rear tyres skid across the road surface, and the vehicle spins around

D. Driver loses control over the steering, and the vehicle continues moving in its current direction

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4

Bead wires are made of

A. Steel

B. Copper

C. Zinc

D. Aluminium

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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 service brakes employed in cars are generally operated

A. Mechanically

B. Hydraulically

C. Pneumatically

D. None of these

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4

If the engine coolant leaks into the engine oil, then engine oil

A. Appears milky

B. Become foamy

C. Turns black

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 starter motor is driven by

A. Chain drive

B. Gear drive

C. Flat belt drive

D. V-belt drive

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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

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

Which of the following parameter can be adjusted by modifying the tie rod attachment length?

A. Camber

B. Caster

C. Toe

D. Steering gear ratio

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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

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 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 function of antilock brake system (ABS) is that is

A. Reduces the stopping distance

B. Minimises the brake fade

C. Maintains directional control during braking by preventing the wheels from locking

D. Prevents nose dives during braking and thereby postpones locking of the wheels

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4

When the top of the wheel is tilted outward, then it is called

A. Positive camber

B. Negative camber

C. Positive caster

D. Negative caster

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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°