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

Difference of theoretical discharge and the actual discharge
Sum of actual discharge and the theoretical discharge
Product 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
The function of guide vanes in a reaction turbine is to

Allow the water to flow over them, without forming eddies
Allow the required quantity of water to enter the turbine
All of the listed here
Allow the water to enter the runner without shock

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