The closed cycle in gas turbines_________________?

A. Provides greater flexibility
B. Provides lesser flexibility
C. In never used
D. Is used when gas is to be burnt

Water is injected in gas turbine cycle to___________________?

A. Control temperature
B. Control output of turbine
C. Control fire hazards
D. Increase efficiency

In the axial flow gas turbine, the work ratio is the ratio of____________________?

A. Compressor work and turbine work
B. Output and input
C. Actual total head tempeature drop to the isentrpic total head drop from total head inlet to static head outlet
D. Actual compressor work and theoretical comprssor work

A closed gas turbine in which fuel is burnt directly in the air is not possible because of__________________?

A. high pressure ratio
B. increasing gas temperature
C. high specific volume
D. high friction losses

In gas turbines^ high thermal efficiency is obtained in_________________?

A. Closed cycle
B. Open cycle
C. Both of the above
D. Closed/open depending on other con-siderations

In jet engines, for the efficient production of large power, fuel is burnt in an atmosphere of__________________?

A. Vacuum
B. Atmospheric air
C. Compressed air
D. Oxygen alone

Turbo propeller has the following additional feature over the turbojet __________________?

A. Peopeller
B. Diffuser
C. Intercooler
D. Turbine and combustion chamber

In jet engines, paraffin is usually used as the fuel because of its _________________?

A. High calorific value
B. Ease of atomisation
C. Low freezing point
D. A. and c. above

If infinite number of heaters be used in a gas turbine, then expansion process in turbine approaches _________________?

A. Isothermal
B. Isentropic
C. Adiabatic
D. Isochoric

Intercooling in gas turbine results in ____________________ ?

A. Increase in net output but decrease in thermal efficiency
B. Increase in thermal efficiency but decrease in net output
C. Increase in both thermal efficiency and net output
D. Decrease in both thermal efficiency and net output