Hydraulics and Fluid Mechanics in ME
A moving fluid mass may be brought to a static equilibrium position, by applying an imaginary inertia force of the same magnitude as that of the accelerating force but in the opposite direction. This statement is called

None of these
Pascal’s law
Archimedes’s principle
D-Alembert’s principle

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

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

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

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Hydraulics and Fluid Mechanics in ME
In a forced vortex motion, the velocity of flow is

directly proportional to the square of its radial distance from the axis of rotation
inversely proportional to the square of its radial distance from the axis of rotation
directly proportional to its radial distance from axis of rotation
inversely proportional to its radial distance from the axis of rotation

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