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Railways General Science & Technology Alternating Current / प्रत्यावर्ती धारा Sample Paper Alternating Current and Electromagnetic Induction Sample Test Paper-10

  • question_answer
    What is the function of oil in a transformer?

    A)  It provides insulation     

    B)  It provides cooling

    C)  It provides smoothness

    D)  Both [a] and [b]

    Correct Answer: D

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