Hydraulics and Fluid Mechanics in ME
A piece of metal of specific gravity 13.6 is placed in mercury of specific gravity 13.6, what fraction of it volume is under mercury?

The metal piece will be immersed in mercury by half
The metal piece will simply float over the mercury
Whole of the metal piece will be immersed with its top surface just at mercury level
Metal piece will sink to the bottom

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Hydraulics and Fluid Mechanics in ME
Manometric head, in case of a centrifugal pump, is equal to

Work-done per kN of water Losses within the impeller
All of these
Suction lift + Loss of head in suction pipe due to friction + Delivery lift + Loss of head in delivery pipe due to friction + Velocity head in the delivery pipe
Energy per kN at outlet of impeller Energy per kN at inlet of impeller

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