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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
Water is injected in gas turbine cycle to

Control temperature
Control output of turbine
Increase efficiency
Control fire hazards

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Compressors, Gas Turbines and Jet Engines
In a compressor, free air delivered is the actual volume delivered at the stated pressure reduced to

N.T.P. conditions
Intake temperature and pressure conditions
20°C and 1 kg/cm²
0°C and 1 kg/cm²

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Compressors, Gas Turbines and Jet Engines
The capacity of a compressor is expressed in

kg/m³
m³/min
kg/m²
m³/kg

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Compressors, Gas Turbines and Jet Engines
Temperature of gases at end of compression as compared to exhaust gases in a gas turbine is

Lower
Higher
Equal
Can't be compared

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Compressors, Gas Turbines and Jet Engines
Open cycle gas turbine works on

Brayton or Atkinson cycle
Ericsson cycle
Carnot cycle
Rankine cycle

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