1
GATE EE 2015 Set 1
Numerical
+2
-0
In a linear two-port network, when 10 V is applied to Port 1, a current of 4 A flows through Port 2 when it is short-circuited. When 5V is applied to Port1, a current of 1.25 A flows through a 1 Ω resistance connected across Port 2. When 3V is applied to Port 1, then current (in Ampere) through a 2 Ω resistance connected across Port 2 is _________.
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

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
3
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
4
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
$$\begin{pmatrix}z_{11}+1&z_{12}\\z_{21}+1&z_{22}\end{pmatrix}$$
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