Communication Systems DVD uses Laser beam for both recording and playback Video head for recording and laser beam for playback Laser beam for recording and video head for playback None of these Laser beam for both recording and playback Video head for recording and laser beam for playback Laser beam for recording and video head for playback None of these ANSWER DOWNLOAD EXAMIANS APP
Communication Systems Under ordinary circumstances, impulse noise can be reduced in FM only None of these AM only Both AM and FM FM only None of these AM only Both AM and FM ANSWER DOWNLOAD EXAMIANS APP
Communication Systems VSB modulation is preferred in TV because It reduces the bandwidth requirement to half None of these It avoids phase distortion at low frequencies It results in better reception It reduces the bandwidth requirement to half None of these It avoids phase distortion at low frequencies It results in better reception ANSWER DOWNLOAD EXAMIANS APP
Communication Systems Which of the following is a digital modulation technique? PSK PCM DM All PSK PCM DM All ANSWER DOWNLOAD EXAMIANS APP
Communication Systems If output power of a radio receiver is doubled, its volume is increased by __________ dB. 3 1 -3 2 3 1 -3 2 ANSWER DOWNLOAD EXAMIANS APP
Communication Systems For AM receivers the standard IF frequency is 106 kHz 455 kHz 10.7 MHz 1.07 MHz 106 kHz 455 kHz 10.7 MHz 1.07 MHz ANSWER DOWNLOAD EXAMIANS APP
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