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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

Ammonia and water vapour
Carbon dioxide
Hydrogen
Nitrogen

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

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Compressors, Gas Turbines and Jet Engines
Ratio of indicated H.P. and brake H.P. is known as

Isothermal efficiency
Volumetric efficiency
Adiabatic efficiency
Mechanical efficiency

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

Highly heated atmospheric air
Solids
Liquid
Plasma

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Compressors, Gas Turbines and Jet Engines
The hottest point in a gas turbine is

at the tip
in the center
at the base
between ~ to i of the blade height

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Compressors, Gas Turbines and Jet Engines
In a centrifugal compressor, an increase in speed at a given pressure ratio causes

Increase in flow
Increase in flow and decrease in efficiency
Increase in efficiency
Decrease in flow

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