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Compressors, Gas Turbines and Jet Engines

Compressors, Gas Turbines and Jet Engines
The inlet pressure is always ___ the discharge pressure.

Less than
Equal to
More than
None of the listed here

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Compressors, Gas Turbines and Jet Engines
In a closed cycle gas turbine, the air is compressed

None of these
Isothermally
Polytropically
Isentropically

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Compressors, Gas Turbines and Jet Engines
Rotary compressors are suitable for

Large discharge at low pressure
Low discharge at high pressure
Low discharge at low pressure
Large discharge at high pressure

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Compressors, Gas Turbines and Jet Engines
During peak load periods, the best method of controlling compressors is

Relief valve
Constant speed unloader
Start-stop motor
Variable speed

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Compressors, Gas Turbines and Jet Engines
In gas turbines, high thermal efficiency is obtained in

Open cycle
Closed cycle
Closed/open depending on other considerations
Closed cycle & Open cycle

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Compressors, Gas Turbines and Jet Engines
Isothermal compression efficiency can be attained by running the compressor

At very slow speed
At very high speed
At zero speed
At average speed

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