Communication Systems Which of the following is used to generate PDM? Schmitt trigger Monostable multi-vibrator Free running multi-vibrator JK flip-flop Schmitt trigger Monostable multi-vibrator Free running multi-vibrator JK flip-flop ANSWER DOWNLOAD EXAMIANS APP
Communication Systems What is the purpose of peak clipper circuits in radio transmitters? To prevent overmodulation To reduce bandwidth To increase bandwidth To regulate oscillator I/P voltage To prevent overmodulation To reduce bandwidth To increase bandwidth To regulate oscillator I/P voltage ANSWER DOWNLOAD EXAMIANS APP
Communication Systems Which one of the following is analog? PWM Differential PCM Delta modulation PCM PWM Differential PCM Delta modulation PCM ANSWER DOWNLOAD EXAMIANS APP
Communication Systems For a low level AM system, the amplifiers modulated stage must be Class C amplifiers Non-linear devices Linear devices Harmonic devices Class C amplifiers Non-linear devices Linear devices Harmonic devices ANSWER DOWNLOAD EXAMIANS APP
Communication Systems For attenuation of high frequencies we should use Series capacitance Shunt capacitance Resistance Inductance Series capacitance Shunt capacitance Resistance Inductance ANSWER DOWNLOAD EXAMIANS APP
Communication Systems If output power of a radio receiver is doubled, its volume is increased by __________ dB. 2 3 1 -3 2 3 1 -3 ANSWER DOWNLOAD EXAMIANS APP
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