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Compressors, Gas Turbines and Jet Engines

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

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

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Compressors, Gas Turbines and Jet Engines
The power available for takeoff and climb in case of turbojet engine as compared to reciprocating engine is

May be less or more depending on ambient conditions
Less
Same
More

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Compressors, Gas Turbines and Jet Engines
The ratio of the indicated power to the shaft power or brake power of the motor or engine required to drive the compressor, is called

Isothermal efficiency
Mechanical efficiency
Compressor efficiency
Volumetric efficiency

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

Pressure ratio
All of these
Maximum cycle temperature
Minimum cycle temperature

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Compressors, Gas Turbines and Jet Engines
As the turbine inlet temperature increases, the thermal efficiency of gas turbine for the optimum pressure ratio

Increases
Decreases
Remain same
First increases and then decreases

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Compressors, Gas Turbines and Jet Engines
The ratio of work-done per cycle to the stroke volume of the compressor is known as

Compressor capacity
Compressor efficiency
Compression ratio
Mean effective pressure

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