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 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 Statistically independent Correlated Uncorrelated Orthogonal Statistically independent Correlated Uncorrelated Orthogonal ANSWER DOWNLOAD EXAMIANS APP
Communication Systems Commercial Frequency deviation of FM is 75 kHz 65 kHz 70 kHz 80 kHz 75 kHz 65 kHz 70 kHz 80 kHz ANSWER DOWNLOAD EXAMIANS APP
Communication Systems The disadvantage of FM over AM is that Large bandwidth is required High modulating power is needed High output power is needed Noise is very high for high frequency Large bandwidth is required High modulating power is needed High output power is needed Noise is very high for high frequency ANSWER DOWNLOAD EXAMIANS APP
Communication Systems For telegraphy the most commonly used modulation system is PCM Single tone modulation FSK Two tone modulation PCM Single tone modulation FSK Two tone modulation ANSWER DOWNLOAD EXAMIANS APP
Communication Systems The main function of a balanced modulator is to Limit noise picked by a receiver Produce balanced modulation of a carrier wave Produce 100% modulation Suppress carrier signal in order to create a single-sideband or double sideband Limit noise picked by a receiver Produce balanced modulation of a carrier wave Produce 100% modulation Suppress carrier signal in order to create a single-sideband or double sideband ANSWER DOWNLOAD EXAMIANS APP
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