Test: Electromagnetic Field Theory - 8 - Electronics and Communication Engineering (ECE) MCQ

What will happen to a bird sitting on a conductor?

Which one is correct option?

Given that , if the radiation intensity of an antenna is proportional to sin² θ, where θ is the elevation angle, the antenna directivity will be

The term critical frequency denotes

The important postulate arising out of Maxwell's modification of Ampere's law is

Which of the following is not a wideband antenna?

The polarization phenomena in Faraday rotation

The portion of the atmosphere closest to ground is called ionosphere.

Which of the following relations is valid for a spherical surface?

When there is rapid attenuation of field inside the conductor, the field current are concentrated close to the surface of the conductor; this phenomenon is called

Which antenna is frequently used for local area transmission at UHF/VHF?

The work done in moving a charge Q on an equipotential line for a distance d will be

For frequency up to 1650 kHz, the transmitting antenna is used a

Radar antennas are

Which of the following is high frequency transmission line?

Which of the following are the properties of a medium?

In microwave communication, some times, microwave signals reach large distances by following the earth curvature. This phenomenon is called

An antenna is synonymous to a

Alternating current can induce voltage because it has magnetic field which is

Which of the following frequencies cannot be used for reliable beyond-the-horizon terrestrial communications without repeaters?

Maximum effective aperture (A_e)max of short dipole antenna is

Beamwidth of an antenna depends upon