Hydraulics and Fluid Mechanics in ME
A pitot tube is used to measure the

Total pressure of liquid flowing in a pipe
Pressure difference between two points in a pipe
Discharge through a pipe
Velocity of flow at the required point in a pipe

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

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Hydraulics and Fluid Mechanics in ME
Slip of a reciprocating pump is negative, when

Suction pipe is short and delivery pipe is long and the pump is running at low speeds
Suction pipe is short and pump is running at low speeds
Suction pipe is long and delivery pipe is short and the pump is running at high speeds
Delivery pipe is long and pump is running at high speeds

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