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HYDRAULICS AND FLUID MECHANICS IN ME

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

less than 2000
more than 4000
between 2000 and 4000
less than 4000

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Hydraulics and Fluid Mechanics in ME
The depth of the center of pressure on a vertical rectangular gate 8 m wide and 6 m high, when the water surface coincides with the top of the gate, is

2.4 m
4.0 m
3.0 m
2.5 m

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Hydraulics and Fluid Mechanics in ME
The maximum thickness of boundary layer in a pipe of radius r is

r/2
2r
r

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Hydraulics and Fluid Mechanics in ME
The speed of a pressure wave through a pipe depends upon

the viscosity of fluid
the bulk modulus for the fluid
the original head
the length of pipe

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Hydraulics and Fluid Mechanics in ME
Practical fluids

possess all the above properties
are compressible
are viscous
possess surface tension

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