Home
Current Affairs January 2024

What is the correct answer?

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

Correct Answer :

A. Headlights and other electrical devices are switched off


Related Questions

What is the correct answer?

4

An imbalance wheel during vehicle operation

A. Makes large noise when its heavy point hits the road surface

B. Deflects in the vehicle's longitudinal direction

C. Bounces vertically or deflects from side to side (as seen from front or rear)

D. Creates a standing wave

What is the correct answer?

4

The battery is an electrochemical device, which means battery

A. Makes chemicals by mechanical means

B. Uses chemical action to provide electricity

C. Has curved plates instead of flat plates

D. Does not use an electrolyte

What is the correct answer?

4

The coefficient of friction for the clutch facing is approximately

A. 0.1

B. 0.4

C. 0.8

D. 1.2

What is the correct answer?

4

Odometer is an instrument used for measurement of

A. Power

B. Fuel consumption

C. Engine r.p.m.

D. Distance

What is the correct answer?

4

The basic part of the engine, to which the other engine parts are attached or assembled is the

A. Cylinder head

B. Crankshaft

C. Cylinder block

D. Oil pan

What is the correct answer?

4

The petrol engines are also known as

A. Spark ignition (S.I.) engines

B. Compression ignition (C.I.) engines

C. Steam engines

D. None of these

What is the correct answer?

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

What is the correct answer?

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

What is the correct answer?

4

The reconditioning process used to give cylinder bore surfaces a crosshatch pattern, is known as

A. Honing

B. Porous plating

C. Boring

D. Shot peening

What is the correct answer?

4

The component that connects the steering rack to the knuckles is

A. Tie rod

B. Sector gear

C. Pivot

D. Spline

What is the correct answer?

4

The connecting rods are generally made of ________ shaped crosssection.

A. I

B. C

C. L

D. H

What is the correct answer?

4

In aluminium cylinder blocks, the cylinder liners are made of

A. Aluminium

B. Ceramic

C. Brass

D. Cast iron

What is the correct answer?

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

What is the correct answer?

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

What is the correct answer?

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

What is the correct answer?

4

The crescent shaped cavity on the piston head top surface is called as

A. Piston oil hole

B. Snap ring

C. Valve recess

D. Valve clearance

What is the correct answer?

4

The purpose of adding pigment to the paint is that it

A. Optimises the viscosity of paint

B. Makes paint film hard

C. Gives colour and filling up effect to the paint

D. None of the above

What is the correct answer?

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

What is the correct answer?

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

What is the correct answer?

4

The motion of the cam is transferred to the valves through

A. Pistons

B. Rocker arms

C. Camshaft pulley

D. Valve stems

What is the correct answer?

4

In an engine, the temperature of the piston will be more at the

A. Crown of the piston

B. Skirt of the piston

C. Piston walls

D. Piston rings

What is the correct answer?

4

Two speed reverse gear arrangements is generally provided in case of

A. Passenger cars

B. Matadors

C. Tractors

D. Trucks

What is the correct answer?

4

It is necessary to maintain the valve clearances as they

A. Reduce the resistance to sliding that occurs between the cam and the tappet

B. Allow for lengthening of the valves owing to the heat of combustion

C. Increase the speed at which the valves move up and down

D. Make the crankshaft turn smoothly

What is the correct answer?

4

The Diesel engine works on

A. Otto cycle

B. Carnot cycle

C. Diesel cycle

D. Rankine cycle

What is the correct answer?

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

What is the correct answer?

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

What is the correct answer?

4

The natural gas is compressed in a CNG cylinder at a pressure of

A. 200 bar

B. 220 bar

C. 250 bar

D. 300 bar

What is the correct answer?

4

How many cells are used in a 12 volt car battery?

A. 2

B. 4

C. 6

D. 8

What is the correct answer?

4

The component of the oil filter that prevents the passage of metal particles and sludge is

A. Element

B. Relief valve

C. Check valve

D. Case

What is the correct answer?

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