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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
A flow is called super-sonic if the

Mach number is between 1 and 6
None of these
Discharge is difficult to measure
Velocity of flow is very high

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Hydraulics and Fluid Mechanics in ME
The Newton's law of resistance is based on the assumption that the

Space around the body is completely filled with the fluid
Fluid particles do not exert any influence on one another
All of these
Planes of the body are completely smooth

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Hydraulics and Fluid Mechanics in ME
The pressure of the liquid flowing through the divergent portion of a Venturimeter

Increases
Remains constant
Depends upon mass of liquid
Decreases

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Hydraulics and Fluid Mechanics in ME
Which of the following velocity potentials satisfies continuity equation ?

cosx
x2y
x2 + y2
x2-y2

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Hydraulics and Fluid Mechanics in ME
A streamline is defined as the line

along which the pressure drop is uniform
parallel to outer surface of pipe
of equal yelocity in a flow
parallel to central axis flow

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Hydraulics and Fluid Mechanics in ME
The coefficient of discharge in case of internal mouthpiece is __________ that of external mouthpiece.

More than
None of these
Equal to
Less than

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