Compressors, Gas Turbines and Jet Engines
Inter-cooling in gas turbine results in

Increase in thermal efficiency but decrease in net output
Increase in net output but decrease in thermal efficiency
Increase in both thermal efficiency and net output
Decrease in both thermal efficiency and net output

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Compressors, Gas Turbines and Jet Engines
In the axial flow gas turbine, the work ratio is the ratio of

Actual total head temperature drop to the isentropic total head drop from total head inlet to static head outlet
Actual compressor work and theoretical compressor work
Compressor work and turbine work
Output and input

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