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chemical engineering fluid mechanics
1. In case of turbulent flow of fluid through a circular pipe, the
(A): mean flow velocity is about 0.5 times the maximum velocity.
(B): point of maximum instability exists at a distance of 2r/3 from the pipe wall (r = pipe radius).
(C): skin friction drag, shear stresses, random orientation of fluid particles and slope of velocity profile at the wall are more.
(D): velocity profile becomes flatter and flatter with increasing Reynolds number.
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