Communication Systems Which one of the following is analog? PCM Differential PCM Delta modulation PWM PCM Differential PCM Delta modulation PWM ANSWER DOWNLOAD EXAMIANS APP
Communication Systems To eliminate ghosts in the picture Connect a booster Twist the transmission line Change the antenna orientation of location Use a longer transmission line Connect a booster Twist the transmission line Change the antenna orientation of location Use a longer transmission line ANSWER DOWNLOAD EXAMIANS APP
Communication Systems A telephone channel requires a bandwidth of about 10 kHz 50 kHz 3 kHz 1 kHz 10 kHz 50 kHz 3 kHz 1 kHz ANSWER DOWNLOAD EXAMIANS APP
Communication Systems Which of the following is used to generate PDM? Schmitt trigger Free running multi-vibrator Monostable multi-vibrator JK flip-flop Schmitt trigger Free running multi-vibrator Monostable multi-vibrator JK flip-flop ANSWER DOWNLOAD EXAMIANS APP
Communication Systems What is the purpose of peak clipper circuits in radio transmitters? 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 To prevent overmodulation ANSWER DOWNLOAD EXAMIANS APP
Communication Systems Circular polarization Involves critical alignment of transmitting and receiving antenna None of these Is useful in discrimination between reception of adjacent beams Is useful in reducing depolarization effect on received wave Involves critical alignment of transmitting and receiving antenna None of these Is useful in discrimination between reception of adjacent beams Is useful in reducing depolarization effect on received wave ANSWER DOWNLOAD EXAMIANS APP
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