The power input P of a pump is calculated from the pressure p and the flow Q as well as from the efficiency factor η of the pump.

Alternatively, the power input can also be calculated from the torque M and the rotational speed n:

The power input P of a pump is calculated from the pressure p and the flow Q as well as from the efficiency factor η of the pump.

Alternatively, the power input can also be calculated from the torque M and the rotational speed n:

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