Related Questions

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 thermodynamic difference between a Rankine cycle working with saturated steam and the Carnot cycle is that
A Carnot cycle can't work with saturated steam
B Heat is supplied to water at temperature below the maximum temperature of the cycle
C A Rankine cycle receives heat at two places
D Rankine cycle is hypothetical
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
The ratio of the net work obtained from the gas turbine plant to the turbine work is known as
A Compression ratio
B Work ratio
C Pressure ratio
D None of these
Rankine cycle efficiency of a good steam power plant may be in the range of
A 15 to 20 per cent
B 35 to 45 per cent
C 70 to 80 per cent
D 90 to 95 per ceut
Rankine cycle comprises of two isothermal and two __________ processes.
A Isobaric
B Polytropic
C Isentropic
D None of these
Efficiency of Rankine cycle can be increased by
A Decreasing initial steam pressure and temperature
B Increasing exhaust pressure
C Decreasing exhausts pressure
D Increasing the expansion ratio
What is the correct sequence for Rankine cycle?
A Pump-Boiler-Turbine-Condenser
B Turbine- Boiler-Pump-Condenser
C Pump-Turbine-Condenser-Boiler
D Boiler- Pump- Turbine- Condenser
The specific output per kg mass flow rate of a gas turbine (having fixed efficiencies of compressor and turbine and fixed higher and lower temperature) with increase in pressure ratio will
A Increase first at fast rate and then slow
B Increase first at slow rate and then fast
C Decrease continuously
D First increase, reach maximum and then decrease

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