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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

Correct Answer :

B. Incomplete valve closure


Related Questions

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4

The timing belt is attached to the camshaft pulley and

A. Timing belt drive pulley

B. Distributor

C. Radiator fan pulley

D. Alternator pulley

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4

The best fuels for compression ignition engines are

A. Straight chain paraffin

B. Aromatics

C. Branched chain paraffin

D. Naphthalene

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4

Which of the following is not a part of the chassis?

A. Wheels

B. Front axle

C. Steering system

D. Seats

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4

The caster is called positive when the top of the king pin is inclined to the

A. Rear of the vehicle

B. Front of the vehicle

C. Left of the vehicle

D. Right of the vehicle

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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

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

With the increase of battery temperature, the specific gravity of electrolyte

A. Increases

B. Decreases

C. Remains the same

D. None of these

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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

An oil filter bypass valve opens when the

A. Engine is cold

B. Engine overheats

C. Oil filter becomes clogged

D. Engine runs at high speed

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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 rigid suspension is beneficial when

A. It is desired to reduce the unsprung mass

B. It is desired to have more flexibility in design

C. It is desired to improve tyre to ground contact characteristics

D. Large changes in load make it necessary to have a large suspension stroke

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4

The purpose of turning radius gauges is to measure the

A. Contact areas of the tyres

B. Free plays of the steering wheel

C. Turning radius of the left and right wheels

D. Difference in the toe angles of the left and right wheels

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4

The engine oil level should be checked

A. Immediately after the ignition switch is turned off

B. While the engine is running

C. A few minutes after the ignition switch is turned off

D. While the engine is running at high idle speed

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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 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

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 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

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

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

The positive 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

The minimum parking brake force is generally ________ of gross vehicle mass (GVM).

A. 5 %

B. 10 %

C. 15 %

D. 20 %

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4

The crankcase dilution means

A. Dilution of fuel in the crankcase

B. Dilution of oil by water in the crankcase

C. Dilution of lubrication oil by fuel in the crankcase

D. Dilution of mixture passing through crankcase in two stroke engines

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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

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 main feature of Macpherson strut suspension is that

A. The vertical size of the suspension can be made more compact

B. Non vertical external forces are supported by the suspension arms

C. The unsprung mass in lighter

D. The assembly is slightly more complicated in design

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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 advantage of the fuel injection system over the carburettor system is

A. Improved fuel efficiency

B. Improved emission

C. Improved power output

D. All of these

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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

The characteristic that is enhanced by the honing of cylinder sleeves inner surface is

A. Cooling efficiency

B. Resistance to wear

C. Lubrication performance

D. None of these