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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
For pipes, laminar flow occurs when Reynolds number is

Between 2000 and 4000
Less than 2000
Less than 4000
More than 4000

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Hydraulics and Fluid Mechanics in ME
In a short cylindrical external mouthpiece, the vena contracta occurs at a distance __________ the diameter of the orifice from the outlet of orifice.

One-half
One-third
One-fourth
Equal to

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Hydraulics and Fluid Mechanics in ME
The discharge over a triangular notch is

Inversely proportional to H5/2
Inversely proportional to H3/2
Directly proportional to H5/2
Directly proportional to H3/2

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Hydraulics and Fluid Mechanics in ME
The point at which the resultant pressure on an immersed surface acts, is known as

Centre of depth
Centre of immersed surface
Centre of gravity
Centre of pressure

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Hydraulics and Fluid Mechanics in ME
Center of pressure on an inclined plane is

At the Centroid
Above the Centroid
Below the Centroid
At metacentre

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Hydraulics and Fluid Mechanics in ME
The motion of air mass in a tornado is a

forced vortex at center and free vortex outside
free vortex motion
forced vortex motion
free vortex at center and forced vortex outside

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