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

To increase flow rate
To convert the kinetic energy to flow energy by a gradual expansion of the flow cross-section
To transport water downstream without eddies
For safety of turbine

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Hydraulics and Fluid Mechanics in ME
The total head of a liquid particle in motion is equal to

Pressure head + kinetic head + potential head
Potential head - (pressure head + kinetic head)
Kinetic head - (pressure head + potential head)
Pressure head - (kinetic head + potential head)

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

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

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