Hydraulics and Fluid Mechanics in ME
Overall efficiency of a centrifugal pump is the ratio of

Energy supplied to the pump to the energy available at the impeller
Energy available at the impeller to the energy supplied to the pump by the prime mover
Manometric head to the energy supplied by the impeller per kN of water
Actual work-done by the pump to the energy supplied to the pump by the prime mover

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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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