GATE ECE 2001 | Question: 5

Question

The admittance parameters of a $2$-port network shown in the figure, given by $Y_{11}=2 \; \mathrm{mho}$, $Y_{12}=-0.5 \mathrm{mho}, \mathrm{Y}_{21}=4.8 \; \mathrm{mho}, \mathrm{Y}_{22}=1 \; \mathrm{mho}$. The output port is terminated with a load admittance $Y_{L}=0.2 \; \mathrm{mho}$. Find $E_{2}$ for each of the following conditions

• A. $\mathrm{E}_{1}=10 \angle 0^{\circ} \; \mathrm{V}$
• B. $\mathrm{I}_{1}=10 \angle 0^{\circ} \; \mathrm{A}$
• C. A source $10 \angle 0^{\circ} \; \mathrm{V}$ in series with a $0.25 \; \Omega$ resistor is connected to the input port.