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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
Coefficient of discharge Cd is equal to (where Cc = Coefficient of contraction, Cv = Coefficient of velocity, and Cr = Coefficient of resistance)

Cc × Cv
Cc × Cr
Cc/Cr
Cv × Cr

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Hydraulics and Fluid Mechanics in ME
The resultant upward pressure of the fluid on an immersed body is called

buoyancy
all the above are correct
center of pressure
upthrust

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Hydraulics and Fluid Mechanics in ME
If the dynamic viscosity of a fluid is 0.5 poise and specific gravity is 0.5, then the kinematic viscosity of that fluid in stokes is

0.25
0.5
1
None of these

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Hydraulics and Fluid Mechanics in ME
The discharge over a right angled notch is (where H = Height of liquid above the apex of notch)

(8/15) Cd. 2g. H
(8/15) Cd. 2g. H3/2
(8/15) Cd. 2g. H²
(8/15) Cd. 2g. H5/2

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Hydraulics and Fluid Mechanics in ME
The discharge through an external mouthpiece is given by (where a = Cross-sectional area of the mouthpiece, and H = Height of liquid above the mouthpiece)

1.585 a.√(2gH)
5.85 aH.√(2g)
0.855 a.√(2gH)
1.855 aH.√(2g)

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Hydraulics and Fluid Mechanics in ME
The upper surface of a weir over which water flows is known is

sill
nappe
crest
weir top

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