Hydraulics and Fluid Mechanics in ME
Coefficient of velocity is defined as the ratio of

Area of jet at vena contracta to the area of orifice
Actual velocity of jet at vena contracta to the theoretical velocity
None of these
Actual discharge through an orifice to the theoretical discharge

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

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

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