Railways Technical Ability Fluid Mechanics and Machinery Question Bank Fluid Mechanics

  • question_answer A laminar flow is taking place in a pipe. Match List-I (Term) with List-II (Expression) and select the correct answer using the codes given below the lists:
    List-I (Term) List-II (Expression)
    A. Discharge, Q 1. \[\frac{16\mu }{\rho \,VD}\]
    B. Pressure drop, \[\frac{\Delta P}{L}\] 2. \[\frac{\pi \,{{d}^{3}}\Delta p}{128\,\mu L}\]
    C. Friction factor, \[f\] 3. \[\frac{32\,\mu \,V}{{{D}^{2}}}\]
    4. \[\frac{\pi {{d}^{4}}\Delta p}{128\,\mu L}\]
    Codes:

    A) A\[\to \]2, B\[\to \]3, C\[\to \]4

    B) A\[\to \]4, B\[\to \]3, C\[\to \]1

    C) A\[\to \]4, B\[\to \]1, C\[\to \]3

    D) A\[\to \]1, B\[\to \]4, C\[\to \]2

    Correct Answer: B


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