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Hydraulics & Fluid Mechanics

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

H3’2
H1/2
H5/2
H5’4 where H is head.

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Hydraulics & Fluid Mechanics
Uniform flow occurs when

the flow is steady
size and cross section change uniformly along length
the flow is streamline
size and shape of the cross section in a particular length remain constant

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Hydraulics & Fluid Mechanics
For a sphere of radius 15 cm moving with a uniform velocity of 2 m/sec through a liquid of specific gravity 0.9 and dynamic viscosity 0.8 poise, the Reynolds number will be

600
300
675
337.5

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Hydraulics & Fluid Mechanics
An open vessel of water is accelerated up an inclined plane. The free water surface will

any one of above is possible
make an angle in opposite direction to inclination of inclined plane
make an angle in direction of inclination of inclined plane
be horizontal

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Hydraulics & Fluid Mechanics
When a body floating in a liquid, is displaced slightly, it oscillates about

metacentre
center of pressure
center of buoyancy
e.g. of body

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Hydraulics & Fluid Mechanics
Separation of flow occurs when

the pressure intensity reaches a minimum
All of these
the cross-section of a channel is reduced
the boundary layer comes to rest

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