Related Questions

Which type of turbine is a Francis Turbine?
A Impulse Turbine
B Screw Turbine
C Reaction turbine
D Turgo turbine
The flow ratio in case of Francis turbine varies from
A 0.15 to 0.3
B 0.4 to 0.5
C 0.6 to 0.9
D 1 to 1.5
The speed ratio in case of Francis turbine varies from
A 0.15 to 0.3
B 0.4 to 0.5
C 0.6 to 0.9
D 1 to 1.5
A Francis turbine is used when the available head of water is
A 0 to 25 m
B 25 m to 250 m
C Above 250 m
D None of these
In a Francis turbine runner, the numbers of blades are generally between
A 2 to 4
B 4 to 8
C 8 to 16
D 16 to 24
Francis turbine is best suited for
A Medium head application from 24 to 180 m
B Low head installation up to 30 m
C High head installation above 180 m
D All types of heads
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 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
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
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

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