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.

THE_VELOCITY_OF_A_WAVE_TRAVELLING_IN_THE_AIR_MEDIUM_WITHOUT_TRANSMISSION_LINES_OR_WAVEGUIDES(WIRELESS)_IS?$

A. 6 x 10<sup>8</sup>
B. 3 x 10<sup>8</sup>
C. 1.5 x 10<sup>8</sup>
D. 9 x 10<sup>8</sup>
Answer» C. 1.5 x 10<sup>8</sup>
Discussion
2.

The_vectors_of_the_electromagnetic_wave_propagation_can_be_expressed_in$

A. Dot product
B. Cross product
C. Unit vector
D. Perpendicular vector
Answer» C. Unit vector
Discussion
3.

In free space, the ratio of frequency to the velocity of light gives the phase constant. State True/False?

A. True
B. False
Answer» B. False
Discussion
4.

In free space, the condition that holds good is

A. Minimum attenuation and propagation
B. Minimum attenuation and maximum propagation
C. Maximum attenuation and minimum propagation
D. Maximum attenuation and propagation
Answer» C. Maximum attenuation and minimum propagation
Discussion
5.

The intrinsic impedance of free space is

A. 489
B. 265
C. 192
D. 377
Answer» E.
Discussion
6.

Zero permeability/permittivity implies which state?

A. No ions are allowed in the medium
B. No current is generated in the medium
C. No magnetic or electric energy is permitted in the medium
D. No resistivity
Answer» D. No resistivity
Discussion
7.

The conductivity in free space medium is

A. Infinity
B. Unity
C. Zero
D. Negative
Answer» D. Negative
Discussion
8.

Which parameter is unity in air medium?

A. Permittivity
B. Absolute permeability
C. Relative permeability
D. Permeability
Answer» D. Permeability
Discussion
9.

In free space, which parameter will be unity?

A. Permittivity
B. Absolute permittivity
C. Relative permittivity
D. Permeability
Answer» D. Permeability
Discussion
10.

In free space, the charge carriers will be

A. 0
B. 1
C. 100
D. Infinity
Answer» B. 1
Discussion