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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
If a body floating in a liquid occupies a new position and remains at rest in this new position, when given a small angular displacement, the body is said to be in __________ equilibrium.

Neutral
None of these
Unstable
Stable

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Hydraulics and Fluid Mechanics in ME
Which of the following instruments is used to measure flow on the application of Bernoulli’s theorem

All of these
Orifice plate
pitot tube
Venturimeter

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Hydraulics and Fluid Mechanics in ME
Unit of surface tension is

Energy/unit area
Both of the above
Velocity/unit area
It has no units

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Hydraulics and Fluid Mechanics in ME
The specific speed from 160 to 500 r.p.m. of a centrifugal pump indicates that the pump is

High speed with axial flow at outlet
High speed with radial flow at outlet
Medium speed with radial flow at outlet
Slow speed with radial flow at outlet

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Hydraulics and Fluid Mechanics in ME
According to Darcy's formula, the loss of head due to friction in the pipe is (where f = Darcy's coefficient, l = Length of pipe, v = Velocity of liquid in pipe, and d = Diameter of pipe)

flv²/2gd
flv²/gd
4flv²/2gd
3flv²/2gd

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Hydraulics and Fluid Mechanics in ME
Centre of buoyancy always

remains below the centre of gravity
remains above the centre of gravity
coincides with the centroid of the volume of fluid displaced
coincides with the centre of gravity

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