Test: Electromagnetic Field Theory - 6 - Electronics and Communication Engineering (ECE) MCQ

Antenna used for T.V. broadcasting is

For a rectangular waveguide (a x b, a > b) to support only the TE₁₀ mode at wavelength which one of the following pairs of in equalities is to be satisfied?

The energy stored in an electric field is given by

Transverse electric (TE) waves have

For infinite value of SWR on a transmission line, the line be terminated with impedance as

An electromagnetic wave incident on a perfect conductor is

A time varying magnetic field produces

The characteristic impedance is given by

Surface integral of the electric field intensity is

The essential condition for antenna array to be linear is that

Directivity gain depends on

The fluctuation in the received signal strength at the receiver of a random variation in the received signal is known as

MF is generally used for

The attenuation in waveguides near the cut off frequency is

The ground waves eventually disappear as one moves away from the transmitter because of

The radiation resistance of a rod tubing antenna is

Power gain of an antenna in a given direction is the ratio of

The troposphere extends from earth surface to a height of

Antenna reciprocity is put to use in

The length of a λ/2 antenna in feet is given by the relation

For satellite communication, the frequency should be

The velocity of electromagnetic wave in free space is given by