Communication Systems In case of frequency modulation, modulating voltage remains constant if the modulating frequency is lowered, then Amplitude of distant sidebands first increases, then decreases Amplitude of distant sidebands remains constant Amplitude of distant sidebands decreases Amplitude of distant sidebands increases Amplitude of distant sidebands first increases, then decreases Amplitude of distant sidebands remains constant Amplitude of distant sidebands decreases Amplitude of distant sidebands increases ANSWER DOWNLOAD EXAMIANS APP
Communication Systems DVD uses Video head for recording and laser beam for playback Laser beam for both recording and playback Laser beam for recording and video head for playback None of these Video head for recording and laser beam for playback Laser beam for both recording and playback Laser beam for recording and video head for playback None of these ANSWER DOWNLOAD EXAMIANS APP
Communication Systems Which one of the following is analog? PCM PWM Delta modulation Differential PCM PCM PWM Delta modulation Differential PCM ANSWER DOWNLOAD EXAMIANS APP
Communication Systems Under ordinary circumstances, impulse noise can be reduced in None of these Both AM and FM FM only AM only None of these Both AM and FM FM only AM only ANSWER DOWNLOAD EXAMIANS APP
Communication Systems Which of the following is a digital modulation technique? DM PSK All PCM DM PSK All PCM ANSWER DOWNLOAD EXAMIANS APP
Communication Systems It is found that a ship to ship communication suffers from fading. This can be avoided by using Space diversity Directional antenna Frequency diversity Broad band antenna Space diversity Directional antenna Frequency diversity Broad band antenna ANSWER DOWNLOAD EXAMIANS APP
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