When port 1 of two-port circuit is short-circuited, I 1 = 4I 2 & V 2 = 0.25 I 2 . Which of the following is true?
Y 12 = 16
With port 1 shorted, V₁ = 0. Hence \(Y_{12}=I_1/V_2=4I_2/(0.25I_2)=16\,S\). Also Y₂₂ = I₂/V₂ = 4 S. The data do not determine Y₁₁ or Y₂₁. The necessarily valid listed statement is Y₁₂ = 16 S.
Important Questions from Two Port Networks
A network is said to be reciprocal if
- For a lossless passive two-port network, $|S_{11}|$ and $|S_{21}|$ intersect at $-3\text{ dB}$.
For a lossy passive two-port network, $|S_{11}|$ and $|S_{21}|$ intersect at $-4\text{ dB}$.
The percentage of power dissipated in the lossy network at the intersection frequency is __.
(rounded off to two decimal places) For the network shown in figure. The 2 port network parameters are
A. $Z_{11}=3.25$, $Z_{12}=1.5$, $Z_{21}=1.5$, $Z_{22}=3$
B. $Y_{11}=0.4$, $Y_{12}=0.5$, $Y_{21}=-0.2$, $Y_{22}=1.6$
C. $h_{11}=2.5$, $h_{12}=0.5$, $h_{21}=-0.5$, $h_{22}=0.33$
D. $A=2.167$, $B=0.8$, $C=2$, $D=3$
Choose the correct answer from the options given below:
The Z-parameters of the given two-port network are:
Read the following statements :
ST 1 : y-parameters can be obtained from Z parameters.
ST 2 : It is not necessary to define y-parameters separately.
