Engineering :: Hydraulics Machines

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The overall efficiency of a reaction turbine is the ratio of

[A].	power produced by the turbine to the energy actually suppied by the turbine	[B].	actual work available at the turbine to the energy imparted to the wheel
[C].	workdone on the wheel to the energy (or head of water) actually supplied to the turbine	[D].	none of the above

Answer: Option A