Communication Systems Which of the following is a digital modulation technique? All DM PCM PSK All DM PCM PSK ANSWER DOWNLOAD EXAMIANS APP
Communication Systems VSB modulation is preferred in TV because None of these It avoids phase distortion at low frequencies It results in better reception It reduces the bandwidth requirement to half None of these It avoids phase distortion at low frequencies It results in better reception It reduces the bandwidth requirement to half ANSWER DOWNLOAD EXAMIANS APP
Communication Systems PAM stands for Phase Analogue Modulation Phase Amplitude Modulation Pulse Analogue Modulation Pulse Amplitude Modulation Phase Analogue Modulation Phase Amplitude Modulation Pulse Analogue Modulation Pulse Amplitude Modulation ANSWER DOWNLOAD EXAMIANS APP
Communication Systems For a low level AM system, the amplifiers modulated stage must be Linear devices Non-linear devices Class C amplifiers Harmonic devices Linear devices Non-linear devices Class C amplifiers Harmonic devices ANSWER DOWNLOAD EXAMIANS APP
Communication Systems Circular polarization Is useful in discrimination between reception of adjacent beams Is useful in reducing depolarization effect on received wave None of these Involves critical alignment of transmitting and receiving antenna Is useful in discrimination between reception of adjacent beams Is useful in reducing depolarization effect on received wave None of these Involves critical alignment of transmitting and receiving antenna ANSWER DOWNLOAD EXAMIANS APP
Communication Systems For telegraphy the most commonly used modulation system is Two tone modulation Single tone modulation FSK PCM Two tone modulation Single tone modulation FSK PCM ANSWER DOWNLOAD EXAMIANS APP
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