Analysis of GATE EC Previous Papers for Subject Electromagnetics

Aspiring engineers who are preparing for the Graduate Aptitude Test in Engineering (GATE) understand the significance of thorough preparation and comprehensive study resources.

Through a meticulous examination of previous years’ question papers, we aim to provide you with valuable insights, key trends, and effective strategies to excel in Electromagnetics for your GATE exam.

GATE EC Syllabus for the Subject Electromagnetics

Maxwell’s Equations: differential and integral forms and their interpretation, boundary conditions, wave equation, Poynting vector.

Plane Waves and Properties: reflection and refraction, polarization, phase and group velocity, propagation through various media, skin depth.

Transmission Lines: equations, characteristic impedance, impedance matching, impedance transformation, S-parameters, Smith chart.

Rectangular and circular waveguides, light propagation in optical fibers, dipole and monopole antennas, linear antenna arrays.

Analysis of Previous GATE Papers for Electromagnetics

Recent GATE Paper Questions of Electromagnetics

The following questions have been asked from Electromagnetics , in GATE-EC 2023 Paper.

Q.1. The rate of increase, of a scalar field f(x,y,z) = xyz, in the direction v = (2,1,2) at a point (0,2,1) is

a) 2/3

b) 4/3

c) 2

d) 4

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Q. 2 Consider a narrow band signal, propagating in a lossless dielectric medium (ε_r=1, μ_r=1), with phase velocity v_p and group velocity v_g. Which of the following statement is true? (c is the velocity of light in vacuum.)

a) v_p > c, v_g > c

b) v_p < c, v_g > c

c) v_p > c, v_g < c

d) v_p < c, v_g < c

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Q.3.The electric field of a plane electromagnetic wave is

E=a_xC_{1x}\cos\left(\omega t-\beta z\right)+a_yC_{1y}\cos\left(\omega t-\beta z+\theta\right)\;V/m

Which of the following combination(s) will give rise to a left handed elliptically polarized (LHEP) wave?

a) C_{1x}=1,\;C_{1y}=1,\;\theta=\frac\pi4

b) C_{1x}=2,\;C_{1y}=1,\;\theta=\frac\pi2

c) C_{1x}=1,\;C_{1y}=2,\;\theta=\frac{3\pi}2

d) C_{1x}=2,\;C_{1y}=1,\;\theta=\frac{3\pi}4

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