Hydraulics and Fluid Mechanics in ME
The vapour pressure over the concave surface is

greater than the vapour pressure over the plane surface
zero
equal to the vapour pressure over the plane surface
less man the vapour pressure over the plane surface

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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
The liquid particles at different sections have different velocities
Each liquid particle has a definite path

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