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Railways NTPC (Technical Ability) Vibration Analysis Question Bank Vibration Analysis

  • question_answer
    Critical speed of a shaft with a disc supported in between is equal to the natural frequency of the system in:

    A) Transverse vibrations

    B) Torsional vibrations

    C) Longitudinal vibrations

    D) Longitudinal vibrations provided the shaft is vertical.

    Correct Answer: A

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