Official PYQ · 2006Set 1 · Q85Transmission LinesMCQ1 mark

GATE EC 2006 Set 1 Q85 — Transmission Lines

Statement for Linked Answer Questions 84 and 85
A $30$ -Volts battery with zero source resistance is connected to a coaxial line of characteristic impedance of $50$ Ohms at $t=0$ second and terminated in an unknown resistive load. The line length is such that it takes $400 \; \mu s$ for an electromagnetic wave to travel from source end to load end and vice-versa. At $t=400 \; \mu s$ , the voltage at the load end is found to be $40$ Volts.

The steady-state current through the load resistance is

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Answer: B

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Published 10 Oct 2026

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GATE EC 2006 Set 1 Q85 — Transmission Lines

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