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

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

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Hydraulics and Fluid Mechanics in ME
The total head of a liquid particle in motion is equal to

Potential head - (pressure head + kinetic head)
Kinetic head - (pressure head + potential head)
Pressure head + kinetic head + potential head
Pressure head - (kinetic head + potential head)

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