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Compressors, Gas Turbines and Jet Engines

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

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

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Compressors, Gas Turbines and Jet Engines
The thermal efficiency of a gas turbine as compared to a diesel plant is

Depends on other factors
More
Same
Less

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Compressors, Gas Turbines and Jet Engines
The indicated work per unit mass of air delivered is

Inversely proportional to clearance volume
Greatly affected by clearance volume
Not affected by clearance volume
Directly proportional to clearance volume

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Compressors, Gas Turbines and Jet Engines
The pressure of air at the beginning of the compression stroke is ___ the atmospheric pressure.

Equal to
More than
None of the listed here
Less than

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Compressors, Gas Turbines and Jet Engines
The thermodynamic efficiency of rotary compressor is based on

Adiabatic compression
Polytropic compression
Isothermal compression
Isentropic compression

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Compressors, Gas Turbines and Jet Engines
The work-done on a compressor will be minimum if air is taken from

A source of high temperature air
A source of low temperature air
The atmosphere
A source at 0° C

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