Railways Technical Ability Instrument Mechanical Question Bank Instrument Mechanical

  • question_answer Which of the following statements are false regarding the relation Specific speed. \[{{N}_{s}}\left( \frac{N\sqrt{Q}}{{{H}^{5/4}}} \right)\]

    A) The relation is valid for both impulse as well as reaction turbines

    B) The value of specific speed depends on the system of units

    C) The value of specific speed for pelton wheel will be lower than that for Kaplan turbine for any system of units

    D) The dimensions of specific speed are: \[(FLT{{\,}^{-\,1}})\]

    Correct Answer: D

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