1. (a) Determine the Y-parameters for the two-port network shown in Fig. 1. (b) Consider the reciprocal two-port network shown in Fig. 2. Prove that: i. The Thevenin equivalent impedance is Zth ii. The Thevenin equivalent voltage is Vth iii. Find Zth and Vth for the circuit in Fig. 1. = - Z22 Z21 Vs. Z12Z21 Z11+Zs = Z11+Zs i/p 2i 8 Ω ww 29 ΙΩ o/p