12th Class Physics Alternating Current / प्रत्यावर्ती धारा Question Bank Case Based (MCQs) - Alternating Current

  • question_answer
    Flush point of an oil is

    A) the temperature at which the oil flashes and continuously burns.

    B) the temperature at which the oil ignites spontaneously.

    C) the temperature at which the oil starts boiling.

    D) The temperature at which the oil forms fumes.  

    Correct Answer: B

    Solution :

    Option [b] is correct. Explanation: Flush point is a very important parameter of transformer oil. Flashpoint of an oil is the temperature at which the oil ignites spontaneously. This must be as high as possible (not less than\[{{160}^{o}}\] C from the point of safety).


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