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RAJASTHAN PMT Rajasthan - PMT Solved Paper-1995

  • question_answer
    Number of turns in primary coil of a transformer is 240. When input voltage is 20 volt, then output voltage is 2.5 volt. The number of turns in secondary coil is :

    A)  250                       

    B)                         100                       

    C)         10                         

    D)                         30

    Correct Answer: D

    Solution :

    \[\frac{{{V}_{P}}}{{{V}_{S}}}=\frac{{{N}_{P}}}{{{N}_{S}}}\] \[\Rightarrow \]\[\frac{20}{2.5}=\frac{240}{{{N}_{S}}}\] \[\Rightarrow \]\[{{N}_{S}}=30\]


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