Wireless Communication MCQ Questions with Answers - 1

Question: 1

For communication from satellite to the earth station, microwave frequencies are used because

(A) Many channel can be used

(B) These do not get reflected back by ionosphere

(C) Noise added to signal is low in this window

(D) Loss is minimum

Question: 2

Dispersion in optical fiber used in a communication link is of which type?

(A) Angular dispersion

(B) Chromatic dispersion

(C) Dipersion arising due to structural irregularities in the fiber

(D) Modal dispersion

Question: 3

A satellite link uses different frequencies for receiving and transmitting in order to

(A) Avoid interference between in its powerful transmitted signal and weak incoming signal

(B) Avoid interference from terrestrial microwave link

(C) Minimize free space losses

(D) Maximize antenna gain

Question: 4

A single mode fibre does not suffer from which type of dispersions?

(A) Polarization mode dispersion

(B) Intermodal dispersion

(C) Material dispersion

(D) Waveguide dispersion

Question: 5

Ghost in a television picture is due to

(A) The poor phase characteristics of the IF amplifier

(B) Incorrect tuning

(C) Multipath reception of signals

(D) Poor frequency response of the video amplifier