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

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

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Hydraulics and Fluid Mechanics in ME
Coefficient of velocity is defined as the ratio of

Area of jet at vena contracta to the area of orifice
Actual velocity of jet at vena contracta to the theoretical velocity
None of these
Actual discharge through an orifice to the theoretical discharge

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