Hydraulics and Fluid Mechanics in ME
The flow in a pipe or channel is said to be uniform when

The liquid particles at all sections have the same velocities
The quantity of liquid flowing per second is constant
Each liquid particle has a definite path
The liquid particles at different sections have different velocities

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Hydraulics and Fluid Mechanics in ME
The function of guide vanes in a reaction turbine is to

Allow the required quantity of water to enter the turbine
All of the listed here
Allow the water to flow over them, without forming eddies
Allow the water to enter the runner without shock

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