Manipal Medical Manipal Medical Solved Paper-2011

  • question_answer
    In AC circuit a resistance of\[R\,\Omega ,\]is connected in series with an inductance L. If the phase difference between the current and voltage is \[45{}^\circ ,\]the inductive reactance will be

    A)  \[R/2\]             

    B)  \[R/4\]

    C)  R                

    D)  None of these

    Correct Answer: C

    Solution :

     Phase difference in R-L circuit \[\phi ={{\tan }^{-1}}\left( \frac{{{X}_{L}}}{R} \right)\] \[\tan 45{}^\circ =\frac{{{X}_{L}}}{R}\] \[{{X}_{L}}=R\]


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