Communication Systems A buffer amplifier is A high gain D.C. amplifier A cathode follower stage A double-tuned amplifier None of these A high gain D.C. amplifier A cathode follower stage A double-tuned amplifier None of these ANSWER DOWNLOAD EXAMIANS APP
Communication Systems A telephone channel requires a bandwidth of about 1 kHz 10 kHz 50 kHz 3 kHz 1 kHz 10 kHz 50 kHz 3 kHz ANSWER DOWNLOAD EXAMIANS APP
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. 10 5 4.9 995 10 5 4.9 995 ANSWER DOWNLOAD EXAMIANS APP
Communication Systems When the length of antenna is a whole wavelength The radiation is zero in all directions The radiation at right angles is zero The radiation at right angles is maximum The radiation is maximum in all directions The radiation is zero in all directions The radiation at right angles is zero The radiation at right angles is maximum The radiation is maximum in all directions ANSWER DOWNLOAD EXAMIANS APP
Communication Systems As per Shannon-Hartley theorem, a noise less Gaussian channel has Small capacity None of these Infinite capacity Zero capacity Small capacity None of these Infinite capacity Zero capacity ANSWER DOWNLOAD EXAMIANS APP
Communication Systems VSB modulation is preferred in TV because 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 None of these ANSWER DOWNLOAD EXAMIANS APP
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