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Compressors, Gas Turbines and Jet Engines

Compressors, Gas Turbines and Jet Engines
In gas turbines, high thermal efficiency is obtained in

Closed/open depending on other considerations
Open cycle
Closed cycle
Closed cycle & Open cycle

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Compressors, Gas Turbines and Jet Engines
In open cycle turbojet engines used in military aircraft, reheating the exhaust gas from the turbine by burning, more fuel is used to increase the

None of these
Efficiency of the engine
Both (A) and (B)
Thrust and range of aircraft

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Compressors, Gas Turbines and Jet Engines
Air-fuel ratio in a jet engine will be of the order of

0.41736111111111
0.83402777777778
0.62569444444444
2.5006944444444

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Compressors, Gas Turbines and Jet Engines
The work ratio of simple gas turbine cycle depends on

Maximum cycle temperature
Minimum cycle temperature
All of these
Pressure ratio

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Compressors, Gas Turbines and Jet Engines
The compressor capacity with decrease in suction temperature

Decreases
Increases
Remain unaffected
May increase or decrease depending on compressor capacity

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Compressors, Gas Turbines and Jet Engines
Actual compression curve is

Same as adiabatic
Better than isothermal and adiabatic
In between isothermal and adiabatic
Same as isothermal

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