Related Questions

The pressure compounded impulse turbine as compared to velocity compounded turbine require __________ number of stages.
A Same
B Less
C More
D None of these
The pressure velocity compounded impulse turbine allows a bigger pressure drop and hence __________ numbers of stages are required.
A More
B Less
C Equal
D None of these
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 None of the above
An impulse turbine as compared to a reaction turbine, for a given power has _________ row of blades.
A Equal
B Less
C More
D None of these
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 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
In a velocity compounded impulse turbine, when steam flows through the second row of moving blades,
A Velocity increases
B Velocity decreases
C Velocity remains constant
D Pressure remains constant
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
As the turbine inlet temperature increases, the thermal efficiency of gas turbine for the optimum pressure ratio
A Increases
B Decreases
C Remain same
D First increases and then decreases
The hydraulic efficiency of an impulse turbine is the
A Ratio of the actual power produced by the turbine to the energy actually supplied by the turbine
B Ratio of the actual work available at the turbine to the energy imparted to the wheel
C Ratio of the work done on the wheel to the energy of the jet
D None of the above

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