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Railways NTPC (Technical Ability) Fluid Mechanics and Machinery Question Bank Fluid Mechanics

  • question_answer
    Which one of the following is the correct relationship between the boundary layer thickness \[\delta ,\] displacement thickness \[\delta *\] and the momentum thickness \[\theta ?\]

    A) \[\delta <\delta *>\theta \]                      

    B) \[\delta *>\theta >\delta \]

    C) \[\theta >\delta >\delta *\]                      

    D) \[\theta >\delta *>\delta \]

    Correct Answer: A

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