Communication Systems For telegraphy the most commonly used modulation system is Two tone modulation FSK PCM Single tone modulation Two tone modulation FSK PCM Single tone modulation 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. 995 4.9 10 5 995 4.9 10 5 ANSWER DOWNLOAD EXAMIANS APP
Communication Systems The maximum power output of a standard A earth station over the total band allocated to satellite communication is about 50 kW 20 kW 0.5 kW 8 kW 50 kW 20 kW 0.5 kW 8 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 Non-linear devices Class C amplifiers Harmonic devices Linear devices Non-linear devices Class C amplifiers ANSWER DOWNLOAD EXAMIANS APP
Communication Systems What is the purpose of peak clipper circuits in radio transmitters? To regulate oscillator I/P voltage To increase bandwidth To reduce bandwidth To prevent overmodulation To regulate oscillator I/P voltage To increase bandwidth To reduce bandwidth To prevent overmodulation ANSWER DOWNLOAD EXAMIANS APP
Communication Systems In EM waves, polarization 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 Is caused by reflection ANSWER DOWNLOAD EXAMIANS APP
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