Communication Systems For a low level AM system, the amplifiers modulated stage must be Non-linear devices Harmonic devices Linear devices Class C amplifiers Non-linear devices Harmonic devices Linear devices Class C amplifiers ANSWER DOWNLOAD EXAMIANS APP
Communication Systems Which of the following is used to generate PDM? Free running multi-vibrator Monostable multi-vibrator JK flip-flop Schmitt trigger Free running multi-vibrator Monostable multi-vibrator JK flip-flop Schmitt trigger ANSWER DOWNLOAD EXAMIANS APP
Communication Systems PAM stands for Phase Amplitude Modulation Pulse Amplitude Modulation Pulse Analogue Modulation Phase Analogue Modulation Phase Amplitude Modulation Pulse Amplitude Modulation Pulse Analogue Modulation Phase Analogue Modulation ANSWER DOWNLOAD EXAMIANS APP
Communication Systems An FM radio receiver which is tuned to a 91.6 MHz broadcast station may receive an image frequency of __________ MHz. 80.9 70.2 102.3 113 80.9 70.2 102.3 113 ANSWER DOWNLOAD EXAMIANS APP
Communication Systems As per Shannon-Hartley theorem, a noise less Gaussian channel has Small capacity Zero capacity Infinite capacity None of these Small capacity Zero capacity Infinite capacity None of these ANSWER DOWNLOAD EXAMIANS APP
Communication Systems The disadvantage of FM over AM is that High output power is needed High modulating power is needed Noise is very high for high frequency Large bandwidth is required High output power is needed High modulating power is needed Noise is very high for high frequency Large bandwidth is required ANSWER DOWNLOAD EXAMIANS APP
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