CEE Kerala Engineering CEE Kerala Engineering Solved Paper-2002

  • question_answer
    In a step-up transformer the voltage in the primary is 220 V and the current is 5 A. The secondary voltage is found to be 22000 V. The current in the secondary (neglect losses) is:

    A)  5 A                        

    B)         50 A                     

    C)         500 A                   

    D)         0.05 A

    E)  0.5 A

    Correct Answer: D

    Solution :

    \[\frac{{{V}_{s}}}{{{V}_{p}}}=\frac{{{I}_{s}}}{{{I}_{p}}}\Rightarrow {{I}_{s}}={{I}_{p}}\times \frac{{{V}_{s}}}{{{V}_{p}}}=5\times \frac{220}{22000}=0.05\,A\]


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