Communication System VIVA Questions and Answers Pdf - 2

Question: 6

The wave form of the phase modulated wave is similar to that of

(A) AM wave

(B) FM wave

(C) Pulsating wave

(D) Stationary wave

Question: 7

Modulation factor describes the extent to which the _____ of the carrier wave is changed by the audio signal.

(A) frequency

(B) amplitude

(C) phase

(D) all the above

Question: 8

Radiowaves are propagated in three different ways from the transmitting to the receiving antenna depending on the _____ of the wave.

(A) velocity

(B) intensity

(C) frequency

(D) amplitude

Question: 9

Radar uses _____ to detect and to fix the position of targets at a distance.

(A) radiowaves

(B) x-rays

(C) infra red rays

(D) microwaves

Question: 10

Medium wave signals received during the day time use _____ propagation.

(A) surface wave

(B) space wave

(C) ionospheric wave

(D) sky wave