Related Questions

Reheating in a multistage expansion gas turbine ________ compressor work.
A Has no effect on
B Decreases
C Increases
D None of these
Reheating in gas turbine results in
A Increase of work ratio
B Decrease of thermal efficiency
C Decrease of work ratio
D Both (A) and (B) above
In open cycle turbojet engines used in military aircraft, reheating the exhaust gas from the turbine by burning, more fuel is used to increase the
A Thrust and range of aircraft
B Efficiency of the engine
C Both (A) and (B)
D None of these
Reheating in a gas turbine
A Increases the thermal efficiency
B Increases the compressor work
C Increases the turbine work
D Decreases the thermal efficiency
The main purpose of reheating in gas turbine is to
A Increase temperature
B Reduce turbine size
C Increase power output
D Increase speed
Reheating of steam in a turbine
A Increases the work-done through the turbine
B Increases the efficiency of the turbine
C Reduces wear on the blades
D All of these
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
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
A closed cycle gas turbine gives ________ efficiency as compared to an open cycle gas turbine.
A Same
B Lower
C Higher
D None of these
The specific speed of a turbine is the speed of an imaginary turbine, identical with the given turbine, which
A Delivers unit discharge under unit head
B Delivers unit discharge under unit speed
C Develops unit power under unit head
D Develops unit power under unit speed

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