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Hydraulics and Fluid Mechanics in ME

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/√2
√2
1

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Hydraulics and Fluid Mechanics in ME
Property of a fluid by which its own molecules are attracted is called

cohesion
adhesion
compressibility
viscosity

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Hydraulics and Fluid Mechanics in ME
According to Darcy's formula, the loss of head due to friction in the pipe is (where f = Darcy's coefficient, l = Length of pipe, v = Velocity of liquid in pipe, and d = Diameter of pipe)

4flv²/2gd
flv²/2gd
3flv²/2gd
flv²/gd

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Hydraulics and Fluid Mechanics in ME
A flow is called sub-sonic, if the Mach number is

Unity
More than 6
Between 1 and 6
Less than unity

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Hydraulics and Fluid Mechanics in ME
The specific weight of sea water is __________ that of pure water.

Same as
None of these
More than
Less than

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Hydraulics and Fluid Mechanics in ME
If a body floating in a liquid occupies a new position and remains at rest in this new position, when given a small angular displacement, the body is said to be in __________ equilibrium.

Neutral
Stable
None of these
Unstable

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