Hydraulics and Fluid Mechanics in ME
The hydraulic efficiency of a reaction turbine, is the ratio of

Power produced by the turbine to the energy actually supplied by the turbine
None of these
Actual work available at the turbine to energy imparted to the wheel
Work-done on the wheel to the energy (or head of water) actually supplied to the turbine

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Hydraulics and Fluid Mechanics in ME
Stanton diagram is a

semi-log plot of friction factor against Reynolds number
log-log plot of relative roughness against Reynolds number
log-log plot of friction factor against Reynolds number
semi-log plot of friction factor against relative roughness

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