Communication Systems The maximum power output of a standard A earth station over the total band allocated to satellite communication is about 0.5 kW 20 kW 8 kW 50 kW 0.5 kW 20 kW 8 kW 50 kW ANSWER DOWNLOAD EXAMIANS APP
Communication Systems In case of low level amplitude modulation system, the amplifiers following the modulated stage must be Harmonic devices Linear devices Class C amplifiers Non-linear devices Harmonic devices Linear devices Class C amplifiers Non-linear devices ANSWER DOWNLOAD EXAMIANS APP
Communication Systems Which of the following is used to generate PDM? Monostable multi-vibrator JK flip-flop Free running multi-vibrator Schmitt trigger Monostable multi-vibrator JK flip-flop Free running multi-vibrator Schmitt trigger ANSWER DOWNLOAD EXAMIANS APP
Communication Systems What is the purpose of peak clipper circuits in radio transmitters? To prevent overmodulation To reduce bandwidth To regulate oscillator I/P voltage To increase bandwidth To prevent overmodulation To reduce bandwidth To regulate oscillator I/P voltage To increase bandwidth ANSWER DOWNLOAD EXAMIANS APP
Communication Systems If in a broadcasting studio, a 1000 kHz carrier is modulated by an audio signal of frequency range 100-5000 kHz, the width of channel is __________ kHz. 4.9 10 5 995 4.9 10 5 995 ANSWER DOWNLOAD EXAMIANS APP
Communication Systems Which of the following does not cause losses in optical fibre cables? Impurities Stepped index operation Microbending Attenuation in glass Impurities Stepped index operation Microbending Attenuation in glass ANSWER DOWNLOAD EXAMIANS APP
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