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Compressors, Gas Turbines and Jet Engines

Compressors, Gas Turbines and Jet Engines
During base load operation, the best method of controlling compressor is

Start-stop motor
Relief valve
Variable speed
Constant speed unloader

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Compressors, Gas Turbines and Jet Engines
The most efficient method of compressing air is to compress it

Adiabatically
Isochronically
Isentropically
Isothermally

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Compressors, Gas Turbines and Jet Engines
Reheating in multistage expansion gas turbine results in

Decrease of heat loss in exhaust
High thermal efficiency
Reduction in compressor work
Maximum work output

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Compressors, Gas Turbines and Jet Engines
Reheating in a gas turbine

Increases the compressor work
Decreases the thermal efficiency
Increases the thermal efficiency
Increases the turbine work

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Compressors, Gas Turbines and Jet Engines
The thermal efficiency of a simple gas turbine for a given turbine inlet temperature with increase in pressure ratio

First decreases and then increases
First increases and then decreases
Decreases
Increases

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Compressors, Gas Turbines and Jet Engines
In a centrifugal compressor, the flow of air is ________ to the axis of compressor.

Parallel
Perpendicular
None of these
Inclined

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