Communication Systems In case of frequency modulation, modulating voltage remains constant if the modulating frequency is lowered, then Amplitude of distant sidebands increases Amplitude of distant sidebands remains constant Amplitude of distant sidebands decreases Amplitude of distant sidebands first increases, then decreases Amplitude of distant sidebands increases Amplitude of distant sidebands remains constant Amplitude of distant sidebands decreases Amplitude of distant sidebands first increases, then decreases ANSWER DOWNLOAD EXAMIANS APP
Communication Systems Skip distance depends on time of day and angle of incidence. False True False True ANSWER DOWNLOAD EXAMIANS APP
Communication Systems To eliminate ghosts in the picture Twist the transmission line Change the antenna orientation of location Connect a booster Use a longer transmission line Twist the transmission line Change the antenna orientation of location Connect a booster Use a longer transmission line ANSWER DOWNLOAD EXAMIANS APP
Communication Systems The modulation index of an FM is changed from 0 to 1. How does the transmitted power change? Remains unchanged Gets increased by 50 percent Gets doubled Gets halved Remains unchanged Gets increased by 50 percent Gets doubled Gets halved ANSWER DOWNLOAD EXAMIANS APP
Communication Systems Which one of the following is analog? PWM Delta modulation Differential PCM PCM PWM Delta modulation Differential PCM PCM ANSWER DOWNLOAD EXAMIANS APP
Communication Systems A telephone channel requires a bandwidth of about 10 kHz 1 kHz 3 kHz 50 kHz 10 kHz 1 kHz 3 kHz 50 kHz ANSWER DOWNLOAD EXAMIANS APP
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