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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
The flow in which conditions do not change with time at any point, is known as

uniform flow
one dimensional flow
turbulent flow
steady flow

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Hydraulics and Fluid Mechanics in ME
A tank of uniform cross-sectional area (A) containing liquid upto height (H1) has an orifice of cross-sectional area (a) at its bottom. The time required to empty the tank completely will be

(2AH₁²)/(Cd × a√2g)
(2A√H₁)/(Cd × a√2g)
(2AH₁3/2)/(Cd × a√2g)
(2AH₁)/(Cd × a√2g)

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Hydraulics and Fluid Mechanics in ME
The total pressure on the top of a closed cylindrical vessel completely filled up with a liquid is

Inversely proportional to (radius)2
Directly proportional to (radius)4
Inversely proportional to (radius)4
Directly proportional to (radius)2

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Hydraulics and Fluid Mechanics in ME
A weir is said to be broad crested weir, if the width of the crest of the weir is ________ half the height of water above the weir crest.

More than
Less than
Equal to
None of these

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Hydraulics and Fluid Mechanics in ME
A point, in a compressible flow where the velocity of fluid is zero, is called

Critical point
Stagnation point
Vena contracta
None of the listed here

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Hydraulics and Fluid Mechanics in ME
Discharge (Q) of a centrifugal pump is given by (where D = Diameter of impeller at inlet, b = Width of impeller at inlet, and Vf = Velocity of flow at inlet)

Q = π.D.bf.V
Q = D.b.Vf
Q = π.D.Vf
Q = π.b.Vf

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