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Hydraulics & Fluid Mechanics

Hydraulics & Fluid Mechanics
In a Sutro weir, the discharge is proportional to (where H is head)

H3/2
H1/2
H
H5/2

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Hydraulics & Fluid Mechanics
The resultant of all normal pressures acts

vertically upwards
at metacentre
at e.g. of body
at center of pressure

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Hydraulics & Fluid Mechanics
In which of the following the friction drag is generally larger than pressure drag?

an airfoil
a circular disc or plate held normal to flow
a cylinder
a sphere

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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

337.5
600
675
300

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Hydraulics & Fluid Mechanics
A large Roynold number is indication of

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

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Hydraulics & Fluid Mechanics
For a floating body to be in equilibrium

All of these
center of buoyancy and e.g. must lie on same vertical plane
a righting couple should be formed
meta center should be above e.g.

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