Compressors, Gas Turbines and Jet Engines
Intercooling in gas turbines

Increases net output but decreases thermal efficiency
Decreases net output but increases thermal efficiency
Increases net output and thermal efficiency both
Decreases net output and thermal efficiency both

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Compressors, Gas Turbines and Jet Engines
The specific output per kg mass flow rate of a gas turbine (having fixed efficiencies of compressor and turbine and fixed higher and lower temperature) with increase in pressure ratio will

Decrease continuously
Increase first at slow rate and then fast
First increase, reach maximum and then decrease
Increase first at fast rate and then slow

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