GATE Electromagnetics: Transmission Lines – Previous Year Questions
15 GATE previous year questions on Transmission Lines (Electromagnetics, Electronics and Communication Engineering) with answers and explanations, from every paper.
- GATE 2017 EC Q34 – The voltage of an electromagnetic wave propagating in a coaxial cable with uniform characteristic impedance is V(l) = e- l + j t Volts, where l is the…
- GATE 2016 EC Q35 – The propagation constant of a lossy transmission line is (2 + j5) m-1 and its characteristic impedance is (50 + j0)\ at = 106 rad s-1. The values of…
- GATE 2018 EC Q20 – The points P, Q, and R shown on the Smith chart (normalized impedance chart) in the following figure represent:
- GATE 2018 EC Q31 – A lossy transmission line has resistance per unit length R=0.05\ /m. The line is distortionless and has characteristic impedance of 50\ . The…
- GATE 2020 EC Q23 – The impedances Z=jX, for all X in the range (-,), map to the Smith chart as
- GATE 2020 EC Q31 – A transmission line of length 3/4 and having a characteristic impedance of 50\ is terminated with a load of 400\ . The impedance (rounded off to two…
- GATE 2021 EC Q45 – The impedance matching network shown in the figure is to match a lossless line having characteristic impedance Z 0=50\ with a load impedance Z L. A…
- GATE 2023 EC Q51 – The S-parameters of a two port network is given as [S]=bmatrixS 11&S 12\ 21&S 22bmatrix with reference to Z 0. Two lossless transmission line sections…
- GATE 2023 EC Q52 – The standing wave ratio on a 50 Ω lossless transmission line terminated in an unknown load impedance is found to be 2.0. The distance between…
- GATE 2023 EC Q54 – The following circuit(s) representing a lumped element equivalent of an infinitesimal section of a transmission line is/are
- GATE 2024 EC Q15 – Consider a lossless transmission line terminated with a short circuit as shown in the figure below. As one moves towards the generator from the load,…
- GATE 2024 EC Q58 – A lossless transmission line with characteristic impedance Z 0=50\ is terminated with an unknown load. The magnitude of the reflection co-efficient is…
- GATE 2025 EC Q64 – A 50 Ω lossless transmission line is terminated with a load Z L of (50-j75) Ω. If the average incident power on the line is 10 mW, then the average…
- GATE 2026 EC Q34 – For a lossless passive two-port network, S 11 and S 21 intersect at –3 dB. For a lossy passive two-port network, S 11 and S 21 intersect at –4 dB. The…
- GATE 2026 EC Q52 – A complex load (in Ω) is represented as L=0.530 on the Smith chart. A co-axial cable with a characteristic impedance of 50 Ω is connected to the load.…