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The condition for a 2port network to be reciprocal is ______________

(a) Z11 = Z22

(b) BC – AD = -1

(c) Y12 = -Y21

(d) h12 = h21

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Right choice is (b) BC – AD = -1

Best explanation: If the network is reciprocal, then the ratio of the response transform to the excitation transform would not vary after interchanging the position of the excitation.

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