1
GATE ECE 2001
MCQ (Single Correct Answer)
+1
-0.3
A transmission line is distortionless if
A
$$R\,L = {1 \over {G\,C}}$$
B
$$R\,L = G\,C$$
C
$$L\,G = R\,C$$
D
$$R\,G = L\,C$$
2
GATE ECE 2000
MCQ (Single Correct Answer)
+1
-0.3
The magnitudes of the open-circuit and short-circuit input impedances of a transmission line are 100$$\Omega \,$$ and 25$$\Omega \,$$ respectively. The characteristic impedance of the line is
A
25 $$\Omega \,$$
B
50 $$\Omega \,$$
C
75 $$\Omega \,$$
D
100 $$\Omega \,$$
3
GATE ECE 1999
MCQ (Single Correct Answer)
+1
-0.3
Assuming perfect conductors of a transmission line, pure TEM propagation is NOT possible in
A
coaxial cable
B
air-filled cylindrical waveguide
C
parallel twin-wire line in air
D
semi-infinite parallel plate waveguide
4
GATE ECE 1998
MCQ (Single Correct Answer)
+1
-0.3
All transmission line sections shown in Fig. have characteristic impedance $${R_0}\, + \,j0$$. The input impedance $${Z_{in}}$$ equals GATE ECE 1998 Electromagnetics - Transmission Lines Question 50 English
A
$${2 \over 3}\,{R_0}$$
B
$${R_0}$$
C
$${3 \over 2}\,{R_0}$$
D
$$2\,\,{R_0}$$
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