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Compressors, Gas Turbines and Jet Engines

Compressors, Gas Turbines and Jet Engines
The stagnation pressure rise in a centrifugal compressor takes place

In the inlet guide vanes only
In the impeller only
In the diffuser and impeller
In the diffuser only

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Compressors, Gas Turbines and Jet Engines
Atmospheric pressure is 1.03 kg/cm and vapour pressure is 0.03 kg/cm. The air pressure will be

1.03 kg/cm²
1.06 kg/cm²
1.00 kg/cm²
0.53 kg/cm²

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Compressors, Gas Turbines and Jet Engines
Work ratio of a gas turbine plant is ratio of

Work done by turbine and heat supplied
Work done by turbine and net work output
Net work output and heat supplied
Net work output and work done by turbine

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Compressors, Gas Turbines and Jet Engines
The criterion of the thermodynamic efficiency for rotary compressor is

None of the listed here
Isentropic compression
Polytropic compression
Isothermal compression

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Compressors, Gas Turbines and Jet Engines
A centrifugal compressor works on the principle of

Conversion of pressure energy into kinetic energy
Centripetal action
Conversion of kinetic energy into pressure energy
Generating pressure directly

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Compressors, Gas Turbines and Jet Engines
In jet engines, for the efficient production of large power, fuel is burnt in an atmosphere of

Oxygen alone
Atmospheric air
Compressed air
Vacuum

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