Compressors, Gas Turbines and Jet Engines
In a single stage, single acting reciprocating air compressor, without clearance, the work-done on the air during isentropic compression is ________ the heat required to raise the temperature of air from T₁ to T₂ at a constant pressure.

Greater than
Less than
None of these
Equal to

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Compressors, Gas Turbines and Jet Engines
In a jet propulsion

The propulsive matter is ejected from within the propelled body
The propulsive matter is caused to flow around the propelled body
Its functioning does not depend upon presence of air
None of these

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