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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 distance from pipe boundary, at which the turbulent shear stress is one-third die wall shear stress, is (where R is the radius of pipe)

1/3 R
3/4 R
1/2 R
2/3 R

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

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

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Hydraulics & Fluid Mechanics
The pressure in Pascals at a depth of 1 m below the free surface of a body of water will be equal to

1 PA
91 PA
9810 PA
981 PA

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Hydraulics & Fluid Mechanics
The Prartdtl mixing length is

independent of shear stress
zero at the pipe wall
maximum at the pipe wall
None of these

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Hydraulics & Fluid Mechanics
The line of action of the buoyant force acts through the

center of gravity of any submerged body
centriod of the displaced volume of fluid
centroid of the volume of fluid vertically above the body
center of the volume of floating body

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