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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
Which of the following instrument can be used for measuring speed of a submarine moving in deep sea

pitot tube
Venturimeter
rotameter
hot wire anemometer

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Hydraulics and Fluid Mechanics in ME
An ideal flow of any fluid must fulfill the following

Pascal’ law
Newton’s law of viscosity
Continuity equation
Newton’s law of motion

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

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

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Hydraulics and Fluid Mechanics in ME
The rise of liquid along the walls of a revolving cylinder about the initial level is _________ the depression of the liquid at the axis of rotation.

More than
Same as
Less than
None of these

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Hydraulics and Fluid Mechanics in ME
Choose the correct relationship

gravity = specific gravity x density
kinematicviscosity = dynamicviscosity x density
dynamicviscosity = kinematicviscosity x density
specific gravity = gravity x density

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Hydraulics and Fluid Mechanics in ME
A jet of water is striking at the centre of a curved vane moving with a uniform velocity in the direction of jet. For the maximum efficiency, the vane velocity is ________ of the jet velocity

One-half
Three-fourth
Two-third
One-third

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