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NEET Sample Paper NEET Sample Test Paper-56

  • question_answer
    The primary winding of transformer has 500 turns whereas its secondary has 5000 turns. The primary is connected to an AC supply of 20V, 50Hz. The secondary will have an output of:

    A) 2V, 5Hz                        

    B) 200V, 500Hz

    C) 2V, 50Hz          

    D) 200V, 50Hz

    Correct Answer: D

    Solution :

    [d] Transformer ratio \[{{N}_{p}}=500{{N}_{s}}=5000\] \[{{V}_{p}}=20V\] \[\frac{{{N}_{p}}}{{{N}_{s}}}=\frac{{{V}_{p}}}{{{V}_{s}}}\] \[{{V}_{s}}=\frac{{{N}_{p}}}{{{N}_{s}}}{{V}_{p}}\] \[{{V}_{s}}=\frac{5000}{500}\times 20\] \[{{V}_{s}}=200V\] Note: \[\frac{{{N}_{p}}}{{{N}_{s}}}=\frac{{{V}_{s}}}{{{V}_{p}}}=\frac{{{I}_{s}}}{{{I}_{p}}}\]


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