Communication Systems Which of the following is used to generate PDM? Schmitt trigger Monostable multi-vibrator Free running multi-vibrator JK flip-flop Schmitt trigger Monostable multi-vibrator Free running multi-vibrator JK flip-flop ANSWER DOWNLOAD EXAMIANS APP
Communication Systems In Pulse Code Modulation system Suffers from the disadvantage of its incompatibly with TDM Large bandwidth is required Quantising noise can be overcome by companding Quantising noise can be reduced by decreasing the number of standard levels Suffers from the disadvantage of its incompatibly with TDM Large bandwidth is required Quantising noise can be overcome by companding Quantising noise can be reduced by decreasing the number of standard levels 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 1.01 200 and 100.1 200 and 10.01 200 and 200 200 and 1.01 200 and 100.1 200 and 10.01 ANSWER DOWNLOAD EXAMIANS APP
Communication Systems Commercial Frequency deviation of FM is 70 kHz 80 kHz 65 kHz 75 kHz 70 kHz 80 kHz 65 kHz 75 kHz ANSWER DOWNLOAD EXAMIANS APP
Communication Systems Which of the following is an indirect way of generating FM? Armstrong modulator Reactance FET modulator Reactance bipolar transistor Varactor diode modulator Armstrong modulator Reactance FET modulator Reactance bipolar transistor Varactor diode modulator ANSWER DOWNLOAD EXAMIANS APP
Communication Systems The disadvantage of FM over AM is that Large bandwidth is required High modulating power is needed High output power is needed Noise is very high for high frequency Large bandwidth is required High modulating power is needed High output power is needed Noise is very high for high frequency ANSWER DOWNLOAD EXAMIANS APP
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