Explore topic-wise MCQs in Electromagnetic Theory.

This section includes 10 Mcqs, each offering curated multiple-choice questions to sharpen your Electromagnetic Theory knowledge and support exam preparation. Choose a topic below to get started.

1.

IN_WAVEGUIDES,_WHICH_OF_THE_FOLLOWING_CONDITIONS_WILL_BE_TRUE??$

A. V > c
B. V < c
C. V = c
D. V >> c
Answer» B. V < c
Discussion
2.

The attenuation constant in lossless dielectrics will be$

A. 0
B. 1
C. -1
D. ‚àû
Answer» B. 1
Discussion
3.

The expression for phase constant is given b?

A. Phase constant β = ωμε
B. Phase constant ω = με
C. Phase constant β = ω√(με)
D. Phase constant β = 1/ωμε
Answer» D. Phase constant ‚âà√≠‚Äö√¢¬ß = 1/‚âà√¨‚àö¬¢‚âà√≠¬¨‚à´‚âà√≠¬¨¬µ
Discussion
4.

In perfect conductors, the phase shift between the electric field and magnetic field will be

A. 0
B. 30
C. 45
D. 90
Answer» D. 90
Discussion
5.

For dielectrics, which two components will be in phase?

A. E and wave direction
B. H and wave direction
C. Wave direction and E x H
D. E and H
Answer» E.
Discussion
6.

Calculate the wavelength of the wave with phase constant of 3.14 units.

A. 1
B. 2
C. 0.5
D. 4
Answer» C. 0.5
Discussion
7.

Calculate the velocity of wave propagation in a conductor with frequency 5 x 108 rad/s and phase constant of 3 x 108 units.

A. 3/5
B. 15
C. 5/3
D. 8
Answer» D. 8
Discussion
8.

In conductors, which two parameters are same?

A. Wavelength and phase constant
B. Phase and attenuation constant
C. Attenuation constant and skin depth
D. Skin depth and wavelength
Answer» C. Attenuation constant and skin depth
Discussion
9.

For metals, the conductivity will be

A. 0
B. 1
C. -1
D. Infinity
Answer» E.
Discussion
10.

In conductors, which condition will be true?

A. σ/ωε > 1
B. σωε > 1
C. σ/ωε < 1
D. σωε < 1
Answer» B. ‚âà√¨‚àö√¢‚âà√¨‚àö¬¢‚âà√≠¬¨¬µ > 1
Discussion