Communication Systems Which of the following is used to generate PDM? Monostable multi-vibrator Schmitt trigger Free running multi-vibrator JK flip-flop Monostable multi-vibrator Schmitt trigger Free running multi-vibrator JK flip-flop ANSWER DOWNLOAD EXAMIANS APP
Communication Systems In Modulation, “carrier” is Resultant wave Voltage with constant frequency, phase or amplitude Speech voltage to be transmitted Voltage for which frequency, phase or amplitude is varied Resultant wave Voltage with constant frequency, phase or amplitude 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. False True False True 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 200 200 and 100.1 200 and 10.01 200 and 1.01 200 and 200 200 and 100.1 200 and 10.01 200 and 1.01 ANSWER DOWNLOAD EXAMIANS APP
Communication Systems A telephone channel requires a bandwidth of about 1 kHz 3 kHz 10 kHz 50 kHz 1 kHz 3 kHz 10 kHz 50 kHz ANSWER DOWNLOAD EXAMIANS APP
Communication Systems For a plate-modulated class C amplifier the plate supply voltage is E. The maximum plate cathode voltage could be almost high as 6E 4E 2E 3E 6E 4E 2E 3E ANSWER DOWNLOAD EXAMIANS APP
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