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Compressors, Gas Turbines and Jet Engines

Compressors, Gas Turbines and Jet Engines
The ratio of isentropic work to Euler’s work is known as

Pressure coefficient
Isentropic efficiency
Compressor efficiency
Euler

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Compressors, Gas Turbines and Jet Engines
In a four stage compressor, if the pressure at the first and third stage is 1 bar and 16 bar, then the delivery pressure at the fourth stage will be

16 bar
256 bar
1 bar
64 bar

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Compressors, Gas Turbines and Jet Engines
The type of rotary compressor used in gas turbines, is of

Axial flow type
Radial flow type
Centrifugal type
None of the listed here

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Compressors, Gas Turbines and Jet Engines
Ramjet engine

Is self operating at zero flight speed
Requires no air for its operation
Is not self operating at zero flight speed
Produces a jet consisting of plasma

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Compressors, Gas Turbines and Jet Engines
The volumetric efficiency of a compressor falls roughly as follows for every 100 m increase in elevation

5%
0.5%
0.1%
1.0%

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Compressors, Gas Turbines and Jet Engines
In a jet engine, the air-fuel ratio is

1.6673611111111
1.2506944444444
2.0840277777778
2.5006944444444

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