1
GATE EE 2012
+2
-0.6
With 10 V dc connected at port A in the linear nonreciprocal two-port network shown below, the following were observed:

(i) 1 Ω connected at port B draws a current of 3 A
(ii) 2.5 Ω connected at port B draws a current of 2 A

W ith 10 V dc connected at port A, the current drawn by 7 Ω connected at port B is
A
3/7 A
B
5/7 A
C
1 A
D
9/7 A
2
GATE EE 2012
+2
-0.6
With 10 V dc connected at port A in the linear nonreciprocal two-port network shown below, the following were observed:

(i) 1 Ω connected at port B draws a current of 3 A
(ii) 2.5 Ω connected at port B draws a current of 2 A

For the same network, with 6 V dc connected at port A, 1 Ω connected at port B draws 7/3 A. If 8 V dc is connected to port A, the open circuit voltage at port B is
A
6
B
7
C
8
D
9
3
GATE EE 2010
+2
-0.6
The two-port network P shown in the figure has ports 1 and 2, denoted by terminals (a, b) and (c, d), respectively. It has an impedance matrix Z with parameters denoted by zij. A 1 Ω resistor is connected in series with the network at port 1 as shown in the figure. The impedance matrix of the modified two-port network (shown as a dashed box) is
A
$$\begin{pmatrix}z_{11}+1&z_{12}+1\\z_{21}&z_{22}+1\end{pmatrix}$$
B
$$\begin{pmatrix}z_{11}+1&z_{12}\\z_{21}&z_{22}+1\end{pmatrix}$$
C
$$\begin{pmatrix}z_{11}+1&z_{12}\\z_{21}&z_{22}\end{pmatrix}$$
D
$$\begin{pmatrix}z_{11}+1&z_{12}\\z_{21}+1&z_{22}\end{pmatrix}$$
4
GATE EE 2006
+2
-0.6
The parameters of the circuit shown in the figure are
$${R_i} = 1\,\,M\,\Omega ,\,\,{R_0} = 10\,\Omega ,\,\,A = {10^6}\,\,V/V.$$ If $${V_i} = 1\,\,\mu V,\,\,$$ the output voltage, input impedance and output impedance respectively are
A
$$1\,V,\infty ,\,\,10\,\Omega$$
B
$$1\,V,0,\,\,10\,\Omega$$
C
$$1\,\,V,0,\,\,\infty$$
D
$$10\,\,V,\,\,\infty ,\,\,10\,\Omega$$
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