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

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

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Hydraulics and Fluid Mechanics in ME
Meta-centric height is given as the distance between

The center of gravity of the body and the center of buoyancy
The center of gravity of the body and the metacenter
Center of buoyancy and metacenter
The center of gravity of the body and the center of pressure

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