Communication Systems For telegraphy the most commonly used modulation system is PCM Two tone modulation FSK Single tone modulation PCM Two tone modulation FSK Single tone modulation 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 0.5 kW 50 kW 8 kW 20 kW 0.5 kW 50 kW 8 kW 20 kW ANSWER DOWNLOAD EXAMIANS APP
Communication Systems One of the advantages of base modulation over collector modulation of a transistor class C amplifier is Improved efficiency High power output per transistor Better linearity The lower modulating power requirement Improved efficiency High power output per transistor Better linearity The lower modulating power requirement ANSWER DOWNLOAD EXAMIANS APP
Communication Systems DVD uses Laser beam for recording and video head for playback None of these Video head for recording and laser beam for playback Laser beam for both recording and playback Laser beam for recording and video head for playback None of these Video head for recording and laser beam for playback Laser beam for both recording and playback 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. 70.2 113 80.9 102.3 70.2 113 80.9 102.3 ANSWER DOWNLOAD EXAMIANS APP
Communication Systems The main function of a balanced modulator is to Limit noise picked by a receiver Suppress carrier signal in order to create a single-sideband or double sideband Produce balanced modulation of a carrier wave Produce 100% modulation Limit noise picked by a receiver Suppress carrier signal in order to create a single-sideband or double sideband Produce balanced modulation of a carrier wave Produce 100% modulation ANSWER DOWNLOAD EXAMIANS APP
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