Where does the maximum stress occur in case of laminar flow of incompressible fluid in a closed conduit of diameter 'd' ?
Correct answer: C. At the wall
- A. At the centre
- B. At d/4 from the wall
- C. At the wall
- D. At d/8 from the wall
Explanation
In fully developed laminar pipe flow, shear stress increases linearly from zero at the centre to its maximum at the wall. The no-slip condition and the velocity gradient are greatest near the conduit wall.
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