Compressors, Gas Turbines and Jet Engines
The inter-cooler pressure, for minimum work required, for a two stage reciprocating air compressor, is given by (where p₁ = Intake pressure of air, p₂ = Inter-cooler pressure, and p₃ = Delivery pressure of air)

p₂ = p₁ × p₃
p₂ = p₁ × p₂
p₂ = p₁/p₃
p₂ = p₃/p₁

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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
Pick up the false statement

Gas turbine is a self starting unit
Overall efficiency of gas turbine plant is lower than that of a reciprocating engine
Exhaust losses in gas turbine are high due to large mass flow rate
Gas turbine does not require huge quantity of water like steam plant

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