Hydraulics and Fluid Mechanics in ME
In an internal mouthpiece, if the jet after contraction does not touch the sides of the mouthpiece, then the mouthpiece is said to be

Running free
Partially running free
Partially running full
Running full

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Hydraulics and Fluid Mechanics in ME
Buoyant force is

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

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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

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

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Hydraulics and Fluid Mechanics in ME
The hydraulic efficiency of a reaction turbine, is the ratio of

None of these
Actual work available at the turbine to energy imparted to the wheel
Power produced by the turbine to the energy actually supplied by the turbine
Work-done on the wheel to the energy (or head of water) actually supplied to the turbine

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