Hydraulics and Fluid Mechanics in ME
Hydraulic accumulator is used for

Supplying energy when main supply fails
Accumulating oil
Supplying large quantities of oil for very short duration
Generally high pressures to operate hydraulic machines

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Hydraulics and Fluid Mechanics in ME
Manometric head, in case of a centrifugal pump, is equal to

Suction lift + Loss of head in suction pipe due to friction + Delivery lift + Loss of head in delivery pipe due to friction + Velocity head in the delivery pipe
Work-done per kN of water Losses within the impeller
All of these
Energy per kN at outlet of impeller Energy per kN at inlet of impeller

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