Communication Systems Which of the following is a digital modulation technique? All DM PCM PSK All DM PCM PSK ANSWER DOWNLOAD EXAMIANS APP
Communication Systems For telegraphy the most commonly used modulation system is PCM FSK Single tone modulation Two tone modulation PCM FSK Single tone modulation Two tone modulation ANSWER DOWNLOAD EXAMIANS APP
Communication Systems Which of the following does not cause losses in optical fibre cables? Stepped index operation Attenuation in glass Microbending Impurities Stepped index operation Attenuation in glass Microbending Impurities ANSWER DOWNLOAD EXAMIANS APP
Communication Systems Skip distance depends on time of day and angle of incidence. True False True False ANSWER DOWNLOAD EXAMIANS APP
Communication Systems The maximum power output of a standard A earth station over the total band allocated to satellite communication is about 8 kW 0.5 kW 20 kW 50 kW 8 kW 0.5 kW 20 kW 50 kW ANSWER DOWNLOAD EXAMIANS APP
Communication Systems Which of the following is used to generate PDM? Monostable multi-vibrator Schmitt trigger JK flip-flop Free running multi-vibrator Monostable multi-vibrator Schmitt trigger JK flip-flop Free running multi-vibrator ANSWER DOWNLOAD EXAMIANS APP
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