Analog Communication Set 2

FM signal ✘ DSB-SC signal ✘ PCM signal ✘ DM signal ✔

The disturbance caused in the nearby channel or circuit due to transmitted signal ✘ Adjacent frequency rejection ✘ Generation of closely lying side bands ✘ None of the above ✔

fs + fi

✘

fs +2fi

✘

2fs +fi

✘

2( fs + fi)

✔

Amplitude of the carrier remains same ✘ Frequency of the carrier varies in accordance with the modulating signal ✘ The number of side bands are infinite ✘ All of the above ✔

Change in carrier frequency to the frequency above and below the centre frequency ✘ Formation of side bands ✘ The variation of the instantaneous carrier frequency in proportion to the modulating signal ✘ All of the above ✔

The total variation in frequency from the lowest to the highest point ✘ Frequency deviation above or below the carrier frequency ✘ Width of the side band ✘ None of the above ✔

Amplitude of the modulating signal ✘ Carrier frequency ✘ Modulating frequency ✘ Transmitter amplifier ✔

Does not give high stability to FM signal frequency ✘ Distorted FM signal is generated due to harmonics of modulating signal ✘ Cannot be used for high power FM generation ✘ Both a and b ✔

The detector operates only for small deviation in frequency ✘ Low pass filter of the detector produces distortion in the detection ✘ Both a and b ✘ None of the above ✔

It gives high stability to FM signal frequency ✘ Distortion free FM signal is generated ✘ High power FM generation is possible ✘ None of the above ✔