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Railways NTPC (Technical Ability) Electrical Machine Question Bank Electrical Machine

  • question_answer
    The most commonly used connections for power systems as a step - up and step - down transformers are

    A)  Star - delta, star - star  

    B)  Delta - star, star - delta

    C)  Star - star, delta - delta

    D)  Star - delta, delta - star

    Correct Answer: D

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