1
GATE ECE 2026
Numerical
+1
-0.33

For a lossless passive two-port network, $\left|S_{11}\right|$ and $\left|S_{21}\right|$ intersect at -3 dB .

For a lossy passive two-port network, $\left|S_{11}\right|$ and $\left|S_{21}\right|$ intersect at -4 dB ..

The percentage of power dissipated in the lossy network at the intersection frequency is $\_\_\_\_$ .

(rounded off to two decimal places)

Your input ____
2
GATE ECE 2024
MCQ (Single Correct Answer)
+1
-0.33

Consider a lossless transmission line terminated with a short circuit as shown in the figure below. As one moves towards the generator from the load, the normalized impedances $Z_{inA}$, $Z_{inB}$, $Z_{inC}$, and $Z_{inD}$ (indicated in the figure) are ______.

GATE ECE 2024 Electromagnetics - Transmission Lines Question 8 English
A

$Z_{inA} = +1j \Omega$, $Z_{inB} = \infty$, $Z_{inC} = -1j \Omega$, $Z_{inD} = 0$

B

$Z_{inA} = \infty$, $Z_{inB} = +0.4j \Omega$, $Z_{inC} = 0$, $Z_{inD} = +0.4j \Omega$

C

$Z_{inA} = -1j \Omega$, $Z_{inB} = 0$, $Z_{inC} = +1j \Omega$, $Z_{inD} = \infty$

D

$Z_{inA} = +0.4j \Omega$, $Z_{inB} = \infty$, $Z_{inC} = -0.4j \Omega$, $Z_{inD} = 0$

3
GATE ECE 2021
MCQ (Single Correct Answer)
+1
-0.33

The impedance matching Network shown in figure is to match a lossless line having characteristic impedance $Z_o= 50 \Omega$ with a load impedance $Z_L$. A quarter - Wave line having a characteristic impedance $Z_1=75 \Omega$ is connected to $Z_L$. Two stubs having characteristic impedance of $75 \Omega$ each are connected to this quarter - wave line. One is a short - circuited (S.C) stub of length $0.25 \lambda$ connected across PQ and the other one in an open - Circuted (O.C) stub of length 0.5 $\lambda$ connected across RS.

GATE ECE 2021 Electromagnetics - Transmission Lines Question 5 EnglishThe impedance matching is achieved when the real part of $Z_L$ is

A

$33.3 \Omega$

B

$75.0 \Omega$

C

$50.0 \Omega$

D

$112.5 \Omega$

4
GATE ECE 2020
Numerical
+1
-0

A transmission line of length $3 \lambda / 4$ and having a characteristic impedance of $50 \Omega$ is terminated with a load of $400 \Omega$. The impedance (rounded off to two decimal places) seen at the input end of the transmission line is $\_\_\_\_$ $\Omega$.

Your input ____

GATE ECE Subjects

Browse all chapters by subject