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4

In a four cylinder inline engine, the number of firing strokes in one revolution of the crank is

A. 1

B. 2

C. 3

D. 4

Correct Answer :

B. 2


Related Questions

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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 condition that causes vapour locking in a brake system is

A. Overheating of the fluid due to frequent brake application

B. Overcooling of the brakes during high speed driving

C. Keeping the vehicle without use for an extended period

D. An excessively high engine speed on a downhill road

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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

The purpose of transmission in an automobile is

A. To vary the speed of automobile

B. To vary the torque at the wheels

C. To vary the power of automobile

D. None of these

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4

The Diesel engines are also known as

A. Spark ignition (S.I.) engines

B. Compression ignition (C.I.) engines

C. Steam engines

D. None of these

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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 valve tappet clearance is measured by

A. Screw pitch gauge

B. Engineering scale

C. Feeler gauge

D. Vernier caliper

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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

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4

A laminated glass upon cracking

A. Bursts into sharp edged fragments

B. Bursts into granular pieces

C. Sandwiched layer traps the fragments

D. Breaks into the form of crystals

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4

The specific gravity of Diesel is about

A. 0.65

B. 0.75

C. 0.85

D. 0.95

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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

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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

The order in which effort applied to the steering wheel is transferred to the front wheel is

A. Steering wheel, steering gearbox, steering shaft, tie rod, steering knuckle, front wheels

B. Steering wheel, steering shaft, steering gearbox, tie rod, steering knuckle, front wheels

C. Steering wheel, steering shaft, steering gearbox, steering knuckle, tie rod, front wheels

D. Steering wheel, tie rod, steering gearbox, steering shaft, steering knuckle, front wheels

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4

In a four stroke engine for each crankshaft revolution, the camshaft revolves

A. One half turn

B. One turn

C. Two turns

D. Four turns

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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 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

The basic purpose of tyres is to

A. Grip the road and provide good traction

B. Substitute for springs

C. Act as brake

D. None of these

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4

In a four wheel drive (4WD), the numbers of gear boxes are

A. 1

B. 2

C. 3

D. 4

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4

The torque available at the contact between driving wheels and road is known as

A. Brake effort

B. Tractive effort

C. Clutch effort

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

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 commonly used antifreeze solution in automobiles is

A. Carbon disulphide

B. Ethylene glycol

C. Ammonium chloride

D. Freon-12

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4

A traction control system (TCS) in automobiles controls the

A. Vibrations on the steering wheel

B. Engine power during acceleration

C. Torque that is transmitted by the tyres to the road surface

D. Stopping distance in case of emergency

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4

The ignition coil is used to

A. Step up current

B. Step down current

C. Step up voltage

D. Step down voltage

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4

The composition of the electrolyte in a fully charged battery is that

A. The electrolyte is pure distilled water

B. The electrolyte is pure sulphuric acid

C. The electrolyte is a mixture of 64% distilled water and 36% sulphuric acid by weight

D. The electrolyte is a mixture of 90% distilled water and 10% sulphuric acid by weight

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4

The cetane rating of Diesel fuel is in the order of

A. 25

B. 45

C. 70

D. 90

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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

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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 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

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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