Official PYQ · 2015Set 3 · Q53Transmission LinesMCQ2 marks

GATE EC 2015 Set 3 Q53 — Transmission Lines

Consider the $3\:m$ long lossless air-filled transmission line shown in the figure. It has a characteristic impedance of $120\pi\: \Omega,$ is terminated by a short circuit, and is excited with a frequency of $37.5\: MHz.$ What is the nature of the input impedance $(Z_{in})?$

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Published 10 Oct 2026

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