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  1. Find z parameters for the following network

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    Answer : Option A

    Explanation :

    Use Mesh analysis

    z parameters are given by,

    V1 = Z11I1 + Z12I2 ...(a)

    V2 = Z21I1 + Z22I2 ...(b)

    Apply KVL to mesh 1

    V1 = 3I1 - 2I3 ...(i)

    Apply KVL to mesh 2

    V2 = 2I2 + 2I3 ...(ii)

    Apply KVL to mesh 3

    5I3 + 2I2 -2I1 =0 ...(iii)

    5I3 = 2I1 - 2I2

    Put I3 in eq. (i)

    ...(iv)

    Put in (ii)

    Similarly, ...(v)

    Compare equation (iv) to (a) and equation (v) to (b)

    ∴

    .

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