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

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

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Hydraulics and Fluid Mechanics in ME
In a forced vortex motion, the velocity of flow is

directly proportional to the square of its radial distance from the axis of rotation
inversely proportional to its radial distance from the axis of rotation
inversely proportional to the square of its radial distance from the axis of rotation
directly proportional to its radial distance from axis of rotation

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