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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

Correct Answer :

C. 9 : 1


Related Questions

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4

The three basic cylinder arrangements for automotive engines are

A. Flat, radial, and V

B. In a row, in line, and opposed

C. In line, V, and opposed

D. V, double row, and opposed

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4

The most commonly used power plant in automobiles is

A. Gas turbine

B. I.C. engine

C. Battery

D. None of these

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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 damper fluid leakage typically occur from

A. Upper damper mounting

B. Bottom of damper

C. Clearance between inner and outer tubes of damper

D. Coil spring mounting

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4

Bead wires are made of

A. Steel

B. Copper

C. Zinc

D. Aluminium

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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

When the brake pedal free play is less than the specified value, then the

A. Brake drags

B. Brake fades

C. Vapour locking occurs in the brake lines

D. Antilock braking system malfunctions

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4

Damper in an automobile is used to

A. Absorb the energy

B. Dissipate the energy

C. Release the energy

D. Increase the energy

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4

The purpose of a thermostat in an engine cooling system is to

A. Prevent the coolant from boiling

B. Allow the engine to warm up quickly

C. Indicate the coolant temperature

D. Pressurise the system to raise the boiling point

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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

The main task of a battery in automobiles is to

A. Supply electricity to the alternator

B. Act as a reservoir or stabilizer of electricity

C. Supply electricity to the vehicle's electrical system at all times while the engine is running

D. Supply a large amount of power to turn the starter motor when the engine is being started

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4

The engine oil viscosity is defined by _________ ratings.

A. Automatic transmission fluid (ATF)

B. Society of automotive engineers (SAE)

C. Gross vehicle weight (GVW)

D. American petroleum institute (API)

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4

In a hydraulic power steering system, the power steering pump is driven by a

A. Belt driven by camshaft

B. Chain driven by crankshaft

C. Belt driven by driveshaft

D. Belt driven by crankshaft

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4

The clutch is located between the transmission and the

A. Engine

B. Rear axle

C. Propeller shaft

D. Differential

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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 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 characteristic that is enhanced by the use of cylinder sleeves is

A. Cooling efficiency

B. Resistance to wear

C. Lubrication performance

D. None of these

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4

The heat transfer from coolant to air in the radiator of an automobile engine takes place by

A. Radiation only

B. Convention only

C. Convection and radiation

D. Conduction, convection and radiation

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4

The main cause for the change in engine oil viscosity is

A. Humidity

B. Temperature

C. Vibration

D. Contamination

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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

Which of the following bulb in a car will have the least wattage?

A. Head light bulb

B. Stop light bulb

C. Parking light bulb

D. Ignition warning bulb

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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

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

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4

The crankshaft of a typical inline four cylinder engine has ________ balance weights.

A. 12

B. 4

C. 16

D. 8

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4

Which of the following oil is more viscous?

A. SAE 30

B. SAE 40

C. SAE 70

D. SAE 80

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4

The tyre rotation is generally done at

A. 1000 km

B. 4000 km

C. 6000 km

D. 10000 km

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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

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4

In a Diesel engine, the function of a fuel injector is to

A. Mix the fuel and air

B. Ignite the air-fuel mixture

C. Provide flame front for ignition

D. Spray atomized fuel in the cylinder

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4

The fuel pump in the programmed fuel injection (PFI) system is located

A. Between the fuel filler pipe and fuel tank

B. In the fuel tank

C. On the distributor mounting in the engine compartment

D. On the engine compartment bulkhead

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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