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Compressors, Gas Turbines and Jet Engines

Compressors, Gas Turbines and Jet Engines
A rocket works with maximum overall efficiency when air craft velocity is equal to the

Twice the jet velocity
Jet velocity
Half the jet velocity
Average of the jet velocity

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Compressors, Gas Turbines and Jet Engines
Temperature of gases at end of compression as compared to exhaust gases in a gas turbine is

Higher
Lower
Equal
Can't be compared

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

1.6673611111111
2.0840277777778
1.2506944444444
2.5006944444444

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Compressors, Gas Turbines and Jet Engines
In air breathing jet engine, the jet is formed by expanding

Solids
Plasma
Liquid
Highly heated atmospheric air

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Compressors, Gas Turbines and Jet Engines
There is a certain pressure ratio (optimum) for a gas turbine at which its thermal efficiency is maximum. With increase in turbine temperature, the value of pressure ratio for the peak efficiency would

Remain same
Decrease
None of these
Increase

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Compressors, Gas Turbines and Jet Engines
Pick up wrong statement. Surging phenomenon in centrifugal compressor depends on

Change in load
Pressure ratio
Stagnation pressure at the outlet
Mass flow rate

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MORE MCQ ON Compressors, Gas Turbines and Jet Engines

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