Compressors, Gas Turbines and Jet Engines
For a two stage reciprocating compressor, compression from p₁ to p₃ is with perfect intercooling and no pressure losses. If compression in both the cylinders follows the same polytropic process and the atmospheric pressure is pa, then the intermediate pressure p₂ is given by

P₂ = Pa × p₃/p₁
p₂ = Pa p₃/p₁
p₂ = p₁. p₃
p₂ = (p₁ + p₃)/2

ANSWER DOWNLOAD EXAMIANS APP

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

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

ANSWER DOWNLOAD EXAMIANS APP

Compressors, Gas Turbines and Jet Engines
Volumetric efficiency of a compressor with clearance volume

May increase/decrease depending on compressor capacity
Increases with increase in compression ratio
In not dependent upon compression ratio
Decreases with increase in compression ratio

ANSWER DOWNLOAD EXAMIANS APP
MORE MCQ ON Compressors, Gas Turbines and Jet Engines