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

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

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Hydraulics and Fluid Mechanics in ME
The hydraulic efficiency of a reaction turbine, is the ratio of

Work-done on the wheel to the energy (or head of water) actually supplied to the turbine
None of these
Power produced by the turbine to the energy actually supplied by the turbine
Actual work available at the turbine to energy imparted to the wheel

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