Compressors, Gas Turbines and Jet Engines
Pick up the wrong statement about advantages of multistage compression

Better lubrication is possible advantages of multistage
More loss of air due to leakage past the cylinder
Mechanical balance is better
Air can be cooled perfectly in between

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

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