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

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Hydraulics and Fluid Mechanics in ME
Coefficient of contraction is the ratio of

Loss of head in the orifice to the head of water available at the exit of the orifice
Actual velocity of jet at vena contracta to the theoretical velocity
Area of jet at vena-contracta to the area of orifice
Loss of head in the orifice to the head of water available at the exit of the orifice

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Hydraulics and Fluid Mechanics in ME
In a reaction turbine, the draft tube is used

To transport water to downstream
To increase the head of water by an amount equal to the height of the runner outlet above the tail race
To run the turbine full
To prevent air to enter the turbine

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