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Question

For stream function ψ=3x2y3, the magnitude of velocity at the point (2,1) is

A
12.37
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B
12
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C
13
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D
13.5
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Solution

The correct option is A 12.37
(a)

u=ψy=3y2=3 units

v=ψx=6x=12 units

V=u2+v2=12.37 units


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