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This question belongs to Mechanical Engineering Hydraulics And Fluid Mechanics In ME

Hydraulics and Fluid Mechanics in ME

?

The tangential velocity of the water element having a free vortex is

A) Directly proportional to its distance from the centre B) Inversely proportional to its distance from the centre C) Directly proportional to its (distance)² from the centre D) Inversely proportional to its (distance)² from the centre

Answer & Solution

Correct Answer: Option B

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Question posted by Examveda

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Shafaat Mushtaq 7 years ago

In free vortex (irrotational flow - circulation is zero along closed contour) tangential velocity is inversely proportion to distance from center.
In forced vortex (rotational flow - circulation is zero along closed contour, leave dropped will rotate) tangential velocity is directly proportion to distance from center.

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