The distance from pipe boundary, at which the turbulent shear stress – McqOptions

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1.	The distance from pipe boundary, at which the turbulent shear stress is one-third die wall shear stress, is (where R is the radius of pipe)
A.	1/3 R
B.	1/2 R
C.	2/3 R
D.	3/4 R
Answer» B. 1/2 R

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