What is pump and it's characteristics?

Question

Accepted Answer

A pump is a mechanical device used to move fluids from one place to another.

Pumps can be classified into two types: positive displacement pumps and centrifugal pumps.
Positive displacement pumps move fluid by trapping a fixed amount and forcing it into a discharge pipe.
Centrifugal pumps use a rotating impeller to create a flow of fluid.
Pump characteristics include flow rate, head, power, efficiency, and NPSH.
Flow rate is the volume of fluid moved per unit of time.
Head is the pressure created by the pump.
Power is the energy required to operate the pump.
Efficiency is the ratio of output power to input power.
NPSH is the net positive suction head required to prevent cavitation.

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