Hydraulics and Fluid Mechanics in ME
The ratio of quantity of liquid discharged per second from the pump to the quantity of liquid passing per second through the impeller is known as

Manometric efficiency
Volumetric efficiency
Overall efficiency
Mechanical efficiency

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Hydraulics and Fluid Mechanics in ME
Buoyant force is

The resultant force acting on a floating body
The force necessary to maintain equilibrium of a submerged body
The resultant force on a body due to the fluid surrounding it
Equal to the volume of liquid displaced

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