Hydraulics and Fluid Mechanics in ME
The Euler's equation for the motion of liquids is based upon the assumption that

The flow is continuous, steady and along the stream line
The fluid is non - viscous, homogeneous and incompressible
All of these
The velocity of flow is uniform over the section

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Hydraulics and Fluid Mechanics in ME
The depth of centre of pressure (h) for a vertically immersed surface from the liquid surface is given by (where IG = Moment of inertia of the immersed surface about horizontal axis through its centre of gravity, A = Area of immersed surface, and x = Depth of centre of gravity of the immersed surface from the liquid surface)

(Ax̅/IG) + x̅
(IG/x̅) - Ax̅
(IG/Ax̅) + x̅
(IG/Ax̅) - x̅

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

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

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