Hydraulics and Fluid Mechanics in ME
Braking jet in an impulse turbine is used

To break the jet of water
To bring the runner to rest in a short time
None of these
To change the direction of runner

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Hydraulics and Fluid Mechanics in ME
Buoyant force is

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

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