Official PYQ · 2012Set 1 · Q16Transmission LinesMCQ1 mark

GATE EC 2012 Set 1 Q16 — Transmission Lines

A coaxial cable with an inner diameter of $1\:mm$ and outer diameter of $2.4\:mm$ is filled with a dielectric of relative permittivity $10.89$ . Given $\mu_0=4\pi\times10^{-7}\:H/m$ , $\varepsilon_0=\frac{10^{-9}}{36\pi}\:F/m$ , the characteristic impedance of the cable is

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Published 10 Oct 2026

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A lossless transmission line with characteristic impedance $\mathrm{Z}_{0}=50 \Omega$ is terminated with an unknown load. The magnitude of the reflection co-efficient is $|\Gamma|=0.6$ . As one moves towards the generator from the load, the maximum value of the input impedance magnitude looking towards the load (in $\Omega$ ) is $\_\_\_\_\_\_.$
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GATE EC 2012 Set 1 Q16 — Transmission Lines

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