product

difference

sum

none of the above

energy available at the impeller to the energy supplied to the pump by the prime mover

actual work done by the pump to the energy supplied to the pump by the prime mover

energy supplied to the pump to the energy available at the impeller

manometric head to the energy supplied by the impeller per kN of water

energy available at the impeller to the energy supplied to the pump by the prime mover

actual work done by the pump to the energy supplied to the pump by the prime mover

energy supplied to the pump to the energy available at the impeller

manometric head to the energy supplied by the impeller per kN of water

manometric efficiency

mechanical efficiency

overall efficiency

volumetric efficiency

give high discharge

produce high heads

pump viscous fluids

all of these