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

Overall efficiency
Volumetric efficiency
Manometric efficiency
Mechanical efficiency

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Hydraulics and Fluid Mechanics in ME
The conditions for the stable equilibrium of a floating body are

the center of buoyancy and the center of gravity must lie on the same vertical line
a righting couple should be formed
the meta-center should lie above the center of gravity
all the above are correct

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