Hydraulics and Fluid Mechanics in ME
Coefficient of contraction is 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
Loss of head in the orifice to the head of water available at the exit of the 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
When a liquid is flowing through a pipe, the velocity of the liquid is

Maximum at the centre and minimum near the walls
Zero at the centre and maximum near the walls
Maximum at the centre and zero near the walls
Minimum at the centre and maximum near the walls

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

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