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Hydraulics & Fluid Mechanics

Hydraulics & Fluid Mechanics
The discharge through a V- notch varies as

H1/2
H3’2
H5’4 where H is head.
H5/2

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Hydraulics & Fluid Mechanics
A vertical rectangular plane surface is submerged in water such that its top and bottom surfaces are 1.5 m and 6.0 m res-pectively below the free surface. The position of center of pressure below the free surface will be at a distance of

4.8 M
4.6 M
4.0 M
4.2 M

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

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

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Hydraulics & Fluid Mechanics
Coefficient of velocity for Borda’s mouth piece running full is

0.707
0.855
1.00
0.611

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Hydraulics & Fluid Mechanics
A large Roynold number is indication of

LAMINAR FLOW
highly turbulent flow.
turbulent flow
smooth and streamline flow

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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

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

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