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

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

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Hydraulics and Fluid Mechanics in ME
Buoyant force is

Equal to the volume of liquid displaced
The resultant force on a body due to the fluid surrounding it
The force necessary to maintain equilibrium of a submerged body
The resultant force acting on a floating body

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Hydraulics and Fluid Mechanics in ME
If a vessel containing liquid moves downward with a constant acceleration equal to ā€˜g’ then

there will be vacuum in the liquid
the pressure in the liquid mass is greater than hydrostatic pressure
None of these
the pressure throughout the liquid mass is atmospheric

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