GATE EC 2023 Set 1 — Question 54
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Electromagnetics → Transmission Lines → Transmission Line Equations
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Question
The following circuit(s) representing a lumped element equivalent of an infinitesimal section of a transmission line is/are
Correct answer
(B) [figure]; (C) [figure]; (D) [figure]
Solution
A transmission line section of length is modeled using series resistance , series inductance , shunt conductance , and shunt capacitance .
- Option (B) represents the standard non-symmetrical L-section model.
- Option (C) represents a symmetrical Pi-section model where the shunt admittance is split into two halves on either side of the series impedance.
- Option (D) represents a symmetrical T-section model where the series impedance is split into two halves on either side of the shunt admittance.
- Option (A) is incorrect because it only accounts for half of the required shunt admittance for a section of length .
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