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Compressors, Gas Turbines and Jet Engines

Compressors, Gas Turbines and Jet Engines
The effective power of gas turbines is increased by adding the following in compressor

Hydrogen
Nitrogen
Ammonia and water vapour
Carbon dioxide

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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
More
Less
Same

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Compressors, Gas Turbines and Jet Engines
A closed cycle gas turbine consists of a

Compressor
Heating chamber
Cooling chamber
All of these

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Compressors, Gas Turbines and Jet Engines
It is not possible to use closed gas turbine cycle in aeronautical engines because

None of these
It is bulky
It requires cooling water for its operation
It is inefficient

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Compressors, Gas Turbines and Jet Engines
In a centrifugal compressor, the highest Mach number leading to shock wave in the fluid flow occurs at

Impeller outlet radius
Diffuser inlet radius
Impeller inlet radius
Diffuser outlet radius

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Compressors, Gas Turbines and Jet Engines
The volumetric efficiency of a compressor falls roughly as follows for every 5°C increase in atmospheric temperature

0.005
0.01
0.05
0.001

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MORE MCQ ON Compressors, Gas Turbines and Jet Engines

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