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Compressors, Gas Turbines and Jet Engines

Compressors, Gas Turbines and Jet Engines
A gas turbine used in air craft should have

High speed and high h.p.
High h.p. and low weight
Low weight and small frontal area
Small frontal area and high h.p.

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Compressors, Gas Turbines and Jet Engines
Ratio of indicated h.p. to shaft h.p. in known as

Compressor efficiency
Isothermal efficiency
Mechanical efficiency
Volumetric efficiency

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Compressors, Gas Turbines and Jet Engines
The maximum propulsion efficiency of a turbojet is attained at around following speed

2400 km/hr
550 km/hr
1050 km/hr
1700 km/hr

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Compressors, Gas Turbines and Jet Engines
Volumetric efficiency of a compressor decreases with ________ in compression ratio.

Does not change
Decrease
Increase
Remain same

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Compressors, Gas Turbines and Jet Engines
In an axial flow compressor, the ratio of pressure in the rotor blades to the pressure rise in the compressor in one stage is known as

Pressure coefficient
Work factor
Degree of reaction
Slip factor

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Compressors, Gas Turbines and Jet Engines
A rocket engine uses __________ for the combustion of its fuel.

Compressed atmospheric air
None of these
Surrounding air
Its own oxygen

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MORE MCQ ON Compressors, Gas Turbines and Jet Engines

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