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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
The Reynold's number of a ship is __________ to its velocity and length.

Inversely proportional
Square root of velocity
None of these
Directly proportional

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Hydraulics and Fluid Mechanics in ME
For pipes, laminar flow occurs when Roynolds 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
Saving of work done and power by fitting an air vessel to single acting reciprocating pump is of the order of

68.8%
84.8%
39.2%
49.2%

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Hydraulics and Fluid Mechanics in ME
The ratio of the normal force of jet of water on a plate inclined at an angle of 30° as compared to that when the plate is normal to jet, is

43832
1
1/√2
√2

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Hydraulics and Fluid Mechanics in ME
The equation of continuity holds good when the flow

velocity is uniform at all the cross sec-tions
is one dimensional
is steady
All of these

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Hydraulics and Fluid Mechanics in ME
In steady flow of a fluid, the total accele ration of any fluid particle

is independent of coordinates
is never zero
is always zero
can be zero

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