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Hydraulics & Fluid Mechanics

Hydraulics & Fluid Mechanics
Flow of water in a pipe about 3 meters in diameter can be measured by

pitot tube
venturi
orifice plate
rotameter

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Hydraulics & Fluid Mechanics
The position of center of pressure on a plane surface immersed vertically in a static mass of fluid is

at the centroid of the submerged area
always below the centroid of the area
None of these
always above the centroid of the area

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Hydraulics & Fluid Mechanics
According to the principle of buoyancy a body totally or partially immersed in a fluid will be lifted up by a force equal to

weight of the fluid displaced by the body
more than the weight of the body
the weight of the body
less than the weight of the body

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Hydraulics & Fluid Mechanics
For a floating body to be in stable equilibrium, its metacentre should be

below the center of buoyancy
above the center of gravity.
above the center of buoyancy
between e.g. and center of pressure

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Hydraulics & Fluid Mechanics
The difference of pressure between the inside and outside of a liquid drop is

(b)p = T/r
(a)p = Txr
p = T/2r
(d)p = 2T/r

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Hydraulics & Fluid Mechanics
A perfect gas

has constant viscosity
is incompressible
None of these
is of theoretical interest

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