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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
The sheet of water flowing over a notch or a weir is known as

Sill or crest
Orifice
Nappe or vein
None of these

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Hydraulics and Fluid Mechanics in ME
The depth of center of pressure of an immersed surface, inclined at an angle 'θ' with the liquid surface lies at a distance equal to __________ the center of gravity.

IG sin²θ/Ax̅ below
IG sin²θ/Ax̅ above
IG sinθ/Ax̅ above
IG sinθ/Ax̅ below

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Hydraulics and Fluid Mechanics in ME
The total pressure on an immersed surface inclined at an angle θ with the liquid surface is

wAx
wA
wAx/sinθ
wx

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Hydraulics and Fluid Mechanics in ME
An ideal flow of any fluid must fulfill the following

Pascal’ law
Continuity equation
Newton’s law of motion
Newton’s law of viscosity

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Hydraulics and Fluid Mechanics in ME
The ratio of the inertia force to the elastic force is called

Mach number
Weber's number
Reynold's number
Froude's number

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Hydraulics and Fluid Mechanics in ME
Newton's law of viscosity is a relationship between

Pressure, velocity and temperature
Shear stress and velocity
Rate of shear strain and temperature
Shear stress and rate of shear strain

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