NEET Sample Paper NEET Sample Test Paper-82

  • question_answer
    Step up transformer operator on a 230V line and a load current of 2 A. The ratio of primary and secondary winding is\[1:25\]. The current in primary is

    A)  15 A               

    B)  12.5 A

    C)  25 A               

    D)  50 A

    Correct Answer: D

    Solution :

    \[\frac{{{n}_{p}}}{{{n}_{s}}}=\frac{{{l}_{S}}}{{{l}_{P}}}\] \[\therefore \,\,\,\,\,\,\,\,\,\,{{l}_{p}}=\frac{{{n}_{s}}{{l}_{s}}}{{{n}_{p}}}=\frac{25}{1}\times 2=50\,A\]


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