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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
The viscosity of water at 20°C is

One poise
One centipoise
One centistoke
One stoke

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Hydraulics and Fluid Mechanics in ME
The point in the immersed body through which the resultant pressure of the liquid may be taken to act is known as

center of pressure
center of gravity
metacentre
center of buoyancy

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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
Cv × Cr
Cc × Cv
Cc/Cr

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Hydraulics and Fluid Mechanics in ME
The coefficient of discharge for an external mouthpiece is

0.707
0.5
0.855
0.375

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Hydraulics and Fluid Mechanics in ME
Capillary action is due to the

Adhesion of the liquid molecules and the molecules on the surface of a solid
All of the listed here
Cohesion of the liquid
Surface tension

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Hydraulics and Fluid Mechanics in ME
A Francis turbine is used when the available head of water is

25 m to 250 m
Above 250 m
None of these
0 to 25 m

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