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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
Rain drops are spherical because of

atmospheric pressure
viscosity
surface tension forces
air resistance

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Hydraulics and Fluid Mechanics in ME
The correct relationship among displacement thickness d, momentum thickness m and energy thickness e is

e > m > d
e > d > m
d > e > m
d > m > e

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

More than
Equal to
None of these
Less than

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Hydraulics and Fluid Mechanics in ME
The width of the bucket for a Pelton wheel is generally ________ the diameter of jet.

Three times
Double
Five times
Four times

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Hydraulics and Fluid Mechanics in ME
The eddy viscosity for turbulent flow is

independent of the flow
a function of temperature only
a physical property of the fluid.
dependent on the flow

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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
3.0 m
2.5 m
4.0 m

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