RAJASTHAN ­ PET Rajasthan PET Solved Paper-2005

  • question_answer
    A step up transformer operates on a 230 V line and supplies a load of 2 A. The ratio of the primary and secondary winding is 1 : 25. The current in the primary is

    A)  50 A             

    B)  25 A

    C)  12.5 A            

    D)  6.25 A

    Correct Answer: A

    Solution :

     \[\frac{{{I}_{P}}}{{{I}_{S}}}=\frac{{{N}_{S}}}{{{N}_{P}}}\] \[{{I}_{P}}=\frac{{{N}_{S}}}{{{N}_{P}}}\times {{I}_{S}}\] \[=\frac{25}{1}\times 2\] \[{{I}_{P}}=50\,A\]


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