Hydraulics and Fluid Mechanics in ME
The rise or depression of liquid in a tube due to surface tension wim increase in size of tube will

increase
remain unaffected
decrease
may increase or decrease depending on the characteristics of liquid

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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)

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

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Hydraulics and Fluid Mechanics in ME
Which of the following is an incorrect statement ?

Flow nozzle is cheaper than venturimeter but has higher energy loss
Discharge is independent of orientation of venturimeter whether it is horizontal, vertical or inclined
Coefficient of contraction of a venturimeter is unity
None of these

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