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 A telephone channel requires a bandwidth of about 50 kHz 3 kHz 10 kHz 1 kHz 50 kHz 3 kHz 10 kHz 1 kHz ANSWER DOWNLOAD EXAMIANS APP
Communication Systems What is the purpose of peak clipper circuits in radio transmitters? To reduce bandwidth To regulate oscillator I/P voltage To prevent overmodulation To increase bandwidth To reduce bandwidth To regulate oscillator I/P voltage To prevent overmodulation To increase bandwidth ANSWER DOWNLOAD EXAMIANS APP
Communication Systems Skip distance depends on time of day and angle of incidence. False True False True ANSWER DOWNLOAD EXAMIANS APP
Communication Systems If output power of a radio receiver is doubled, its volume is increased by __________ dB. 2 -3 1 3 2 -3 1 3 ANSWER DOWNLOAD EXAMIANS APP
Communication Systems As per Shannon-Hartley theorem, a noise less Gaussian channel has Infinite capacity Zero capacity None of these Small capacity Infinite capacity Zero capacity None of these Small capacity ANSWER DOWNLOAD EXAMIANS APP
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