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Compressors, Gas Turbines and Jet Engines

Compressors, Gas Turbines and Jet Engines
Volumetric efficiency of air compressors is of the order of

40 - 50%
60 - 70%
20 - 30%
70 - 90%

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Compressors, Gas Turbines and Jet Engines
The compressor performance at higher altitude compared to sea level will be

Lower
Higher
Same
Dependent on other factors

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Compressors, Gas Turbines and Jet Engines
When the temperature of air leaving the inter-cooler, in a two stage compression with inter-cooler, is ________ the original atmospheric air temperature, then the intercooling is known as perfect or complete intercooling.

Less than
None of these
Equal to
More than

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Compressors, Gas Turbines and Jet Engines
A machine used to raise the pressure of air is called

Gas turbine
Air motor
Compressor
I.C engine

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Compressors, Gas Turbines and Jet Engines
The maximum temperature in a gas turbine is

1000°C
700°C
500°C
200°C

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Compressors, Gas Turbines and Jet Engines
The pressure and temperature conditions of air at the suction of compressor are

Pressure slightly less than atmospheric and temperature slightly more than atmospheric
Slightly more than atmospheric
Slightly less than atmospheric
Atmospheric

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