Hydraulics and Fluid Mechanics in ME
In a depressed nappe

The pressure above the nappe is atmospheric
The pressure above the nappe is negative
The pressure below the nappe is atmospheric
The pressure below the nappe is negative

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Hydraulics and Fluid Mechanics in ME
Slip of a reciprocating pump is defined as the

Product of theoretical discharge and the actual discharge
Ratio of actual discharge to the theoretical discharge
Sum of actual discharge and the theoretical discharge
Difference of theoretical discharge and the actual discharge

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