INTERNAL COMBUSTION ENGINES QUIZ

The object of providing masked inlet valve in the air passage of compression ignition engines is to

Control air flow

Induce primary swirl

Induce secondary turbulence

Enhance flow rate

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Pick up the wrong statement about supercharging

There can be limited supercharging in petrol engines because of detonation

Supercharging reduces knocking in diesel engines

Supercharging at high altitudes is essential

Supercharging results in fuel economy

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The reason for supercharging in any engine is to

Reduce weight and bulk for a given output

Effect fuel economy

Increase power

Increase efficiency

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When crude oil is heated, then which of the following hydrocarbon is given off first?

Natural gas

Kerosene

Gasoline

Paraffin

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The maximum propulsive efficiency of a turbojet engine is at a speed of

2000 km/h

2400 km/h

3000 km/h

1000 km/h

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The Cipoletti weir is a __________ weir.

Trapezoidal

Circular

Triangular

Rectangular

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The compression ignition engines are governed by

Quantitative governing

Qualitative governing

Combination of (B) and (C)

Hit and miss governing

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Supercharging is essential in

Gas turbines

Petrol engines

Diesel engines

Aircraft engines

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The reflectivity depends upon

Energy of neutrons

All of these

Geometry of the reflector

Properties of the reflector

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The mechanical efficiency (ηm) of the engine is given by

None of the listed here

ηm = (B.P × I.P)/100

ηm = B.P/I.P

ηm = I.P/B.P

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