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4

When the battery is half (50%) charged, the specific gravity of acid in a battery is usually

A. 0.74

B. 1.00

C. 1.12

D. 1.19

Correct Answer :

D. 1.19


Related Questions

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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

The compression ratio in petrol engine is kept less than in Diesel engine because

A. It makes petrol engines lighter

B. Higher or equivalent compression ratio in petrol engines is not possible due to pre-ignition

C. Less compression ratio gives better performance

D. It is just customary to have less compression ratio in petrol engines

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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 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

The valve overlap in four stroke petrol engines is approximately

A. 30°

B. 60°

C. 90°

D. 120°

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4

The connecting rod connects the piston and the

A. Cylinder head

B. Cylinder block

C. Camshaft

D. Crankshaft

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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

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

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

In aluminium cylinder blocks, the cylinder liners are made of

A. Aluminium

B. Ceramic

C. Brass

D. Cast iron

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4

The basic function of the suspension is to

A. Absorbs vibration and impact forces from the road surface

B. Ensure that the steering wheel can deliver a suitable amount of steering force

C. Ensure that wheel alignment is not disturbed during driving

D. Automatically correct the effects of over steering

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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

Wheel base of a vehicle is the

A. Distance between the centres of the front and rear wheels

B. Distance between the centres of the front tyres

C. Distance between the centres of the rear tyres

D. Extreme length of the vehicle

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4

When the battery is half (50%) charged, the specific gravity of acid in a battery is usually

A. 0.74

B. 1.00

C. 1.12

D. 1.19

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4

The most effective method of controlling S.I. engine exhaust emission is by

A. Recirculating exhaust

B. Using catalytic converter

C. Using some additives in the fuel

D. None of these

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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

Vulcanizing means

A. Heating rubber under pressure

B. Spraying with special paint

C. Melting rubber while stirring it

D. None of these

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4

The number of exhaust manifolds in a V6 engine is

A. One

B. Two

C. Four

D. Eight

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4

The negative terminal post on the top of a battery is

A. Smaller than the positive terminal post

B. Larger than the positive terminal post

C. Of the same size as the positive terminal post

D. None of these

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4

The correct flow of power through the drive train is

A. Engine drive shafts, clutch, main shaft, counter shaft, final driven gear, wheels

B. Engine clutch, main shaft, counter shaft, final driven gear, drive shafts, wheels

C. Engine clutch, counter shaft, main shaft, final driven gear, drive shafts, wheels

D. Engine main shaft, counter shaft, clutch, final driven gear, drive shafts, wheels

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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 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

The process of removing the burnt gases from the engine cylinder by the fresh charge coming into the engine cylinder from the crankcase, is known as

A. Cleaning

B. Priming

C. Scavenging

D. Detonation

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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

In bias ply tyres

A. All plies run parallel to one another

B. Belts of steel mesh are used in the tyres

C. One ply layer runs diagonally one way and another layer runs diagonally the other way

D. All of the above

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4

The correct way to rectify an imbalanced wheel is to

A. Adjust the tyre pressure

B. Rotate the tyres

C. Adjust the damper spring tension

D. Attach appropriate weights to the wheel at appropriate positions

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4

The air gap between the central electrode and ground (or side) electrode of a spark plug is around

A. 0.2 mm

B. 0.5 mm

C. 1 mm

D. 1.5 mm

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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

Free pedal play in car clutches is about

A. 15 mm

B. 25 mm

C. 40mm

D. 60 mm

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4

The compression ratio for Diesel engines usually lies in the range of

A. 6-10

B. 10-1

C. 15-25

D. 25-40