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Compressors, Gas Turbines and Jet Engines

Compressors, Gas Turbines and Jet Engines
The most efficient method of compressing air is to compress it

Isochronically
Isentropically
Isothermally
Adiabatically

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Compressors, Gas Turbines and Jet Engines
The mass of gas turbine per kW developed is about ________ as that of an I.C. engine.

Same
One sixth
One fourth
One-half

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Compressors, Gas Turbines and Jet Engines
The output of a gas turbine is 300 KW and its efficiency is 20 percent, the heat supplied is

600 KW
15 KW
6000 KW
150 KW

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

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Compressors, Gas Turbines and Jet Engines
Surging is the phenomenon of

Motion of air at sonic velocity
Air stream blocking the passage
Unsteady, periodic and reversed flow
Air stream not able to follow the blade contour

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Compressors, Gas Turbines and Jet Engines
The type of rotary compressor used in gas turbines, is of

None of the listed here
Centrifugal type
Radial flow type
Axial flow type

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