[Solved] The volume flow rate into a Francis turbine is Q m3/s. 0.25Q m3/s volume of water do not flow over the runner blades. What is the mechanical efficiency of the turbine (in %)?

Q.	The volume flow rate into a Francis turbine is Q m3/s. 0.25Q m3/s volume of water do not flow over the runner blades. What is the mechanical efficiency of the turbine (in %)?
A.	65
B.	75
C.	80
D.	Mechanical efficiency cannot be found out from the given information
Answer» D. Mechanical efficiency cannot be found out from the given information

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