Hydraulics and Fluid Mechanics in ME
Discharge of a centrifugal pump is

Directly proportional to diameter of its impeller
Directly proportional to (diameter)² of its impeller
Inversely proportional to (diameter)² of its impeller
Inversely proportional to diameter of its impeller

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

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

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