Communication Systems Which of the following is a digital modulation technique? PCM All DM PSK PCM All DM PSK ANSWER DOWNLOAD EXAMIANS APP
Communication Systems For AM receivers the standard IF frequency is 106 kHz 10.7 MHz 455 kHz 1.07 MHz 106 kHz 10.7 MHz 455 kHz 1.07 MHz ANSWER DOWNLOAD EXAMIANS APP
Communication Systems An audio signal (say from 50 Hz to 10000 Hz) is frequency translated by a carrier having a frequency of 106 Hz. The values of initial (without frequency translation) and final (after frequency translation) fractional change in frequency from one band edge to the other are 200 and 10.01 200 and 100.1 200 and 1.01 200 and 200 200 and 10.01 200 and 100.1 200 and 1.01 200 and 200 ANSWER DOWNLOAD EXAMIANS APP
Communication Systems Circular polarization Is useful in discrimination between reception of adjacent beams None of these Is useful in reducing depolarization effect on received wave Involves critical alignment of transmitting and receiving antenna Is useful in discrimination between reception of adjacent beams None of these Is useful in reducing depolarization effect on received wave Involves critical alignment of transmitting and receiving antenna ANSWER DOWNLOAD EXAMIANS APP
Communication Systems A buffer amplifier is A double-tuned amplifier A high gain D.C. amplifier None of these A cathode follower stage A double-tuned amplifier A high gain D.C. amplifier None of these A cathode follower stage ANSWER DOWNLOAD EXAMIANS APP
Communication Systems A zero mean white Gaussian noise is passed through an ideal low pass filter of bandwidth 10 kHz. The output of the samples so obtained would be Orthogonal Correlated Statistically independent Uncorrelated Orthogonal Correlated Statistically independent Uncorrelated ANSWER DOWNLOAD EXAMIANS APP
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