Railways Technical Ability Internal Combustion Engine (ICE) Question Bank Internal Combustion Engine (ICE)

  • question_answer The equivalent diameter D of a circular duct corresponding to a rectangular duct having longer side ?a? and shorter side 'b' the same velocity and Pressure drop is given by:

    A) \[D=\frac{a+b}{ab}\]               

    B) \[D=\frac{ab}{a+b}\]

    C) \[D=\frac{\left( a+b \right)}{2ab}\]                     

    D) \[D=\frac{2ab}{a+b}\]

    Correct Answer: D

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