Hydraulics and Fluid Mechanics in ME
Centre of buoyancy always

coincides with the centre of gravity
remains above the centre of gravity
remains below the centre of gravity
coincides with the centroid of the volume of fluid displaced

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

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Hydraulics and Fluid Mechanics in ME
In open channels, the specific energy is the

Total energy measured above the horizontal datum
Total energy per unit discharge
Total energy measured with respect to the datum passing through the bottom of the channel
Kinetic energy plotted above the free surface of water

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