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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
The imaginary line drawn in the fluid in such a way that the tangent to any point gives the direction of motion at that point, is known as

Stream line
Steak line
Potential line
Path line

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Hydraulics and Fluid Mechanics in ME
According to Chezy's formula, the discharge through an open channel is (where A = Area of flow, C = Chezy's constant, m = Hydraulic mean depth, and i = Uniform slope in bed)

C × √(m × i)
mi × √(A × C)
A × √(m × i)
AC × √(m × i)

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Hydraulics and Fluid Mechanics in ME
The pressure at the summit of a syphon is

equal to atmospheric
more than atmospheric
None of these
less than atmospheric

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Hydraulics and Fluid Mechanics in ME
The property of a fluid which enables it to resist tensile stress is known as

cohesion
adhesion
compressibility
surface tension

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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/Cr
Cc × Cr
Cv × Cr
Cc × Cv

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Hydraulics and Fluid Mechanics in ME
Units of surface tension are

energy/unit area
distance
it has no units
both of the above

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