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Compressors, Gas Turbines and Jet Engines

Compressors, Gas Turbines and Jet Engines
The material commonly used for air craft gas turbine is

Duralumin
Stainless steel
Timken, Haste alloys
High alloy steel

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Compressors, Gas Turbines and Jet Engines
The pressure of air at the beginning of the compression stroke is ___ the atmospheric pressure.

More than
None of the listed here
Equal to
Less than

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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

256 bar
1 bar
16 bar
64 bar

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Compressors, Gas Turbines and Jet Engines
The compression ratio in a gas turbine is of the order of

0.50069444444444
3.5 : 1
0.20902777777778
0.33402777777778

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Compressors, Gas Turbines and Jet Engines
The degree of reaction of an axial flow turbine is the ratio of isentropic temperature drop in a blade row to the

Total adiabatic temperature drop
Total temperature drop
Adiabatic temperature drop in the stage
Total temperature drop in the stage

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Compressors, Gas Turbines and Jet Engines
The thermal efficiency of a gas turbine as compared to a diesel plant is

Same
Depends on other factors
Less
More

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