Communication Systems Which of the following is a digital modulation technique? PSK All PCM DM PSK All PCM DM ANSWER DOWNLOAD EXAMIANS APP
Communication Systems FM transmitting and receiving equipment as compared to AM equipment is Cheaper Almost equally costly None of these Costly Cheaper Almost equally costly None of these Costly ANSWER DOWNLOAD EXAMIANS APP
Communication Systems In EM waves, polarization Is due to transverse nature of waves Is always vertical in an isotropic medium Is caused by reflection Results from longitudinal nature of waves Is due to transverse nature of waves Is always vertical in an isotropic medium Is caused by reflection Results from longitudinal nature of waves ANSWER DOWNLOAD EXAMIANS APP
Communication Systems Which of the following does not cause losses in optical fibre cables? Stepped index operation Attenuation in glass Impurities Microbending Stepped index operation Attenuation in glass Impurities Microbending ANSWER DOWNLOAD EXAMIANS APP
Communication Systems In Modulation, “carrier” is Voltage with constant frequency, phase or amplitude Resultant wave Speech voltage to be transmitted Voltage for which frequency, phase or amplitude is varied Voltage with constant frequency, phase or amplitude Resultant wave Speech voltage to be transmitted Voltage for which frequency, phase or amplitude is varied 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
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