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. 5 995 10 4.9 5 995 10 4.9 ANSWER DOWNLOAD EXAMIANS APP
Communication Systems For a low level AM system, the amplifiers modulated stage must be Harmonic devices Class C amplifiers Linear devices Non-linear devices Harmonic devices Class C amplifiers Linear devices Non-linear devices ANSWER DOWNLOAD EXAMIANS APP
Communication Systems The characteristic impedance of a twin wire feeder used for TV signals is about 100 ohm 500 ohm 300 ohm 1000 ohm 100 ohm 500 ohm 300 ohm 1000 ohm ANSWER DOWNLOAD EXAMIANS APP
Communication Systems VSB modulation is preferred in TV because None of these It avoids phase distortion at low frequencies It reduces the bandwidth requirement to half It results in better reception None of these It avoids phase distortion at low frequencies It reduces the bandwidth requirement to half It results in better reception ANSWER DOWNLOAD EXAMIANS APP
Communication Systems A buffer amplifier is A double-tuned amplifier A cathode follower stage A high gain D.C. amplifier None of these A double-tuned amplifier A cathode follower stage A high gain D.C. amplifier None of these ANSWER DOWNLOAD EXAMIANS APP
Communication Systems Which of the following is used to generate PDM? Free running multi-vibrator JK flip-flop Monostable multi-vibrator Schmitt trigger Free running multi-vibrator JK flip-flop Monostable multi-vibrator Schmitt trigger ANSWER DOWNLOAD EXAMIANS APP
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