Compressors, Gas Turbines and Jet Engines
An ideal air compressor cycle without clearance on P-V diagram can be represented by following processes

One adiabatic, one isobaric and two constant volumes
One adiabatic, two isobaric, and one constant volume
Two adiabatic, one isobaric and one constant volume
Two adiabatic and two isobaric

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

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

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

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