Q. In terrestrial microwave links, the number of 'fades' per unit increases as

View solution

Q. Bandwidth of an antenna is related with where Q is quality factor

View solution

Q. When a plane wave travelling in free space is incident normally on a medium having εr = 4.0, then fraction of power transmitted into the medium is given by

View solution

Q. For broadside array, maxima will be obtain at

View solution

Q. Surface impedance at high frequencies is a consideration for

View solution

Q. The unit of displacement density is

View solution

Q. Dish antennas are

View solution

Q. Long distance short-wave radio broadcasting uses

View solution

Q. The affect of ground on radiation pattern is to

View solution

Q. If a electromagnetic signal is incident at 0° in a waveguide then at other port of waveguide we will get

View solution

Q. An antenna having a high Q has

View solution

Q. The polarization of dielectric materials results in

View solution

Q. An electron when placed midway between two equal and opposite charges will

View solution

Q. Which of the following is the abnormal phenomena observed in the ionosphere?

View solution

Q. In a loss-less transmission line

View solution

Q. Which layer is least important in high frequency propagation?

View solution

Q. Distances near the skip distance should be used for sky-wave propagation

View solution

Q. End fire array has a dipole spacing of λ/2.

View solution

Q. Which one of following is correct for broadside array?

View solution

Q. The effective length of an antenna (Le) is

View solution