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RAJASTHAN PMT Rajasthan - PMT Solved Paper-1995

  • question_answer
    In a stop up transformer ratio of number of turn in primary to secondary coil is \[1:25\]. If input voltage is        \[230\text{ }volt\]and load current is\[2amp\], then current in primary coil is:

    A)  \[50A\] 

    B)                         \[25A\]               

    C)         \[12.5A\]           

    D)                         \[6.25A\]

    Correct Answer: A

    Solution :

                    For step-up transformer \[\frac{{{I}_{P}}}{{{I}_{S}}}=\frac{{{N}_{S}}}{{{I}_{P}}}\] \[\frac{{{I}_{P}}}{2}=\frac{25}{1}\]                 \[\Rightarrow \]               \[{{I}_{P}}=50Amp.\]


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