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Discussion :: Network Analysis and Synthesis

  1. Two similar mutually coupled coils have a total inductance of 900 mH and coefficient of coupling 0.5. The self inductance of each coils is

    2. A.
    300 mH
    B.
    150 mH
    C.
    75 mH
    D.
    50 mH

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    Answer : Option A

    Explanation :

    M = kL1L2, L1 = L2 = L, M = kL. Total inductance = L1 + L2 + 2M = 2L + 2kL = 900 mH or L(2 + 2 x 0.5) = 900 or L = 300 mH.

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