Compressors, Gas Turbines and Jet Engines
The overall isothermal efficiency of compressor is defined as the ratio of

Power to drive compressor to isothermal h.p.
Work to compress air isothermally to work for actual compression
Isothermal h.p. to the BHP of motor
Isothermal h.p. to adiabatic h.p.

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Compressors, Gas Turbines and Jet Engines
Choose the correct statement

Gas turbine is capable of rapid start up and loading
Gas turbine requires lot of cooling water
Gas turbines have high standby losses and require lot of maintenance
Gas turbines has flat efficiency at part loads

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Compressors, Gas Turbines and Jet Engines
In the cross compounding of the gas turbine plant

H.P. compressor is connected to L.P. turbine and L.P. compressor is connected to H.P. turbine
All are connected in series
Both the arrangements can be employed
H.P. compressor is connected to H.P. turbine and L.P. compressor to L.P. turbine

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