List of top Electronics Engineering Questions on Electromagnetics

Solution of Laplace's equation, which are continuous through the second derivative, are called
A rectangular waveguide 2.29 cm \(\times\) 1.02 cm operates at a frequency of 11 GHz and a cut-off frequency of 6.55 GHz in TE10 mode. If the maximum potential gradient of the signal is 5 kV/cm, then the maximum power handling capacity of the waveguide will be
The law/Theory and equations are given in the table below. Match List-I with List-II
A plane wave whose electric field is given by \(\vec{E} = 100\cos(\omega t - 6\pi x)\hat{z}\) passes normally from a material 'A' having \(\epsilon_r=4, \mu_r=1\) and \(\sigma=0\) to a material 'B' having \(\epsilon_r=9, \mu_r=4\) and \(\sigma=0\). The values of some of its parameters are given below:
A. \(6\pi\),
B. \(80\pi\),
C. \(1/7\),
D. \(8/7\).
Choose the correct sequence: intrinsic impedance of medium B, Reflection coefficient, Transmission Coefficient and Phase shift constant of medium B, respectively, from the options given below:
In an impedance Smith chart, a clockwise movement along a constant resistance circle gives rise to
The input impedance of a \(\frac{\lambda}{8}\) section of a lossless transmission line of the characteristic impedance \(50\Omega\) is found to be real when the other end is terminated by a load \(Z_L = (R + jX)\Omega\). If \(X\) is \(30\Omega\) the value of R (in \(\Omega\)) is
Consider an air filled rectangular waveguide with dimensions a = 2.286 cm and b = 1.016 cm. The increasing order of the cut-off frequencies for different modes is:
A. TE\(_1_0\),
B. TE\(_0_1\),
C. TE\(_2_0\),
D. TE\(_1_1\).
Choose the correct answer from the options given below: