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RAJASTHAN PMT Rajasthan - PMT Solved Paper-2003

  • question_answer
    In a transformer the number of turns in primary and secondary coil are 50 and 40 respectively. If 220 V A.C. is applied across the primary coil, the ratio of current in primary and secondary coil is

    A)  4 : 5                      

    B)  5 : 4

    C)  16 : 25                 

    D)         25 : 16

    Correct Answer: A

    Solution :

                    In a transformer \[\frac{{{V}_{s}}}{{{V}_{p}}}=\frac{{{i}_{p}}}{{{i}_{s}}}=\frac{{{n}_{s}}}{{{n}_{p}}}\] Ratio of primary current and secondary current \[\Rightarrow \]               \[\frac{{{i}_{p}}}{{{i}_{s}}}=\frac{{{n}_{s}}}{{{n}_{p}}}=\frac{40}{50}=\frac{4}{5}\]


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