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

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Compressors, Gas Turbines and Jet Engines
Which of the following statement is correct relating to rocket engines?

The stagnation conditions exist at the combustion chamber
The exit velocities of exhaust gases are much higher than those in jet engine
The combustion chamber in a rocket engine is directly analogous to the reservoir of a supersonic wind tunnel
All of these

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