Communication Systems The characteristic impedance of a twin wire feeder used for TV signals is about 500 ohm 300 ohm 100 ohm 1000 ohm 500 ohm 300 ohm 100 ohm 1000 ohm ANSWER DOWNLOAD EXAMIANS APP
Communication Systems Which of the following is an indirect way of generating FM? Varactor diode modulator Reactance bipolar transistor Reactance FET modulator Armstrong modulator Varactor diode modulator Reactance bipolar transistor Reactance FET modulator Armstrong modulator ANSWER DOWNLOAD EXAMIANS APP
Communication Systems DVD uses 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 Laser beam for recording and video head for playback None of these ANSWER DOWNLOAD EXAMIANS APP
Communication Systems In Modulation, “carrier” is Resultant wave Voltage with constant frequency, phase or amplitude Speech voltage to be transmitted Voltage for which frequency, phase or amplitude is varied Resultant wave Voltage with constant frequency, phase or amplitude Speech voltage to be transmitted Voltage for which frequency, phase or amplitude is varied ANSWER DOWNLOAD EXAMIANS APP
Communication Systems A telephone channel requires a bandwidth of about 1 kHz 3 kHz 50 kHz 10 kHz 1 kHz 3 kHz 50 kHz 10 kHz ANSWER DOWNLOAD EXAMIANS APP
Communication Systems A woofer should be fed from the input through a Low pass filter Band pass filter Band stop filter High pass filter Low pass filter Band pass filter Band stop filter High pass filter ANSWER DOWNLOAD EXAMIANS APP
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