Railways Technical Ability Fluid Mechanics and Machinery Question Bank Fluid Mechanics

  • question_answer Which one of the following equations gives the velocity distribution across a circular pipe having a viscous flow?

    A) \[u={{u}_{\max }}\,[1-{{(r/R)}^{2}}]\]

    B) \[u={{u}_{\max }}\,[{{R}^{2}}-{{r}^{2}}]\]

    C) \[u={{u}_{\max }}\,{{[1-(r/R)]}^{2}}\]

    D) \[u={{u}_{\max }}\,{{[1+(r/R)]}^{2}}\]

    Correct Answer: A


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