If y is the distance in the cross-stream direction from the centre line at a particular cross-section b → Cross-stream half width. The mean velocity gradients and all the velocity fluctuations become zero when the value \(\frac{y}{b}\) ___________

If y is the distance in the cross-stream direction from the centre li

1.	If y is the distance in the cross-stream direction from the centre line at a particular cross-section b → Cross-stream half width. The mean velocity gradients and all the velocity fluctuations become zero when the value \(\frac{y}{b}\) ___________
A.	goes above unity
B.	goes below unity
C.	goes above zero
D.	goes below zero
Answer» B. goes below unity

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If y is the distance in the cross-stream direction from the centre line at a particular cross-section b → Cross-stream half width. The mean velocity gradients and all the velocity fluctuations become zero when the value \(\frac{y}{b}\) ___________

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