A. same
B. more
C. less
D. depends on other factors
E. unpredictably
Related Mcqs:
- There is a certain pressure ratio (optimum) for a gas turbine at which its thermal efficiency is maximum. With increase in turbine temperature, the value of pressure ratio for the peak efficiency would__________________?
A. remain same
B. decrease
C. increase
D. unpredictable
E. none of the above - The thermal efficiency of a simple gas turbine for a given turbine inlet temperature with increase in pressure ratio_____________________?
A. increases
B. decreases
C. first increases and then decreases
D. first decreases and then increases
E. remains same - As the turbine inlet temperature increases, the thermal efficiency of gas turbine for the optimum pressure ratio_____________________?
A. increases
B. decreases
C. remains same
D. first increases and then decreases
E. first decreases and then increases - The pressure ratio for an open cycle gas turbine compared to closed cycle gas turbine of same h.p. is_______________?
A. low
B. high
C. same
D. low/high depending on make and type
E. unpredictable - The weight per horse power ratio for gas. turbine as compared to I.C. engine and steam turbine is________________?
A. same
B. higher
C. lower
D. uncomparable
E. unpredictable - The efficiency and work ratio of a gas turbine plant can be increased by _____________________?
A. using mulit-stage compressor with mfercooler
B. adding heat exchanger
C. injecting water in/around combustion chamber
D. reheating the air after partial expansion in the turbine
E. all of the 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
E. isobaric - The combustion efficiency of a gas turbine using perfect combustion chamber is of the order of________________?
A. 50%
B. 75%
C. 85%
D. 90%
E. 99% - The ideal efficiency of simple gas turbine cycle depends on________________?
A. pressure ratio
B. maximum cycle temperature
C. minimum cycle temperature
D. all of the above
E. none of the above - For an irreversible gas turbine cycle, the efficiency and work ratio both depend on___________________?
A. pressure ratio alone
B. maximum cycle temperature alone
C. minimum cycle temperature alone
D. both pressure ratio and maximum cycle temperature
E. none of the above
