Communication Systems Which of the following does not cause losses in optical fibre cables? Stepped index operation Microbending Attenuation in glass Impurities Stepped index operation Microbending Attenuation in glass Impurities ANSWER DOWNLOAD EXAMIANS APP
Communication Systems FM transmitting and receiving equipment as compared to AM equipment is None of these Cheaper Costly Almost equally costly None of these Cheaper Costly Almost equally costly ANSWER DOWNLOAD EXAMIANS APP
Communication Systems In EM waves, polarization Is caused by reflection Is due to transverse nature of waves Results from longitudinal nature of waves Is always vertical in an isotropic medium Is caused by reflection Is due to transverse nature of waves Results from longitudinal nature of waves Is always vertical in an isotropic medium ANSWER DOWNLOAD EXAMIANS APP
Communication Systems Full duplex operation permits transmission in both directions at the same time. True False True False ANSWER DOWNLOAD EXAMIANS APP
Communication Systems In Modulation, “carrier” is Voltage with constant frequency, phase or amplitude Resultant wave Voltage for which frequency, phase or amplitude is varied Speech voltage to be transmitted Voltage with constant frequency, phase or amplitude Resultant wave Voltage for which frequency, phase or amplitude is varied Speech voltage to be transmitted ANSWER DOWNLOAD EXAMIANS APP
Communication Systems An audio signal (say from 50 Hz to 10000 Hz) is frequency translated by a carrier having a frequency of 106 Hz. The values of initial (without frequency translation) and final (after frequency translation) fractional change in frequency from one band edge to the other are 200 and 100.1 200 and 10.01 200 and 200 200 and 1.01 200 and 100.1 200 and 10.01 200 and 200 200 and 1.01 ANSWER DOWNLOAD EXAMIANS APP
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