Communication Systems A telephone channel requires a bandwidth of about 50 kHz 10 kHz 1 kHz 3 kHz 50 kHz 10 kHz 1 kHz 3 kHz ANSWER DOWNLOAD EXAMIANS APP
Communication Systems Under ordinary circumstances, impulse noise can be reduced in FM only None of these AM only Both AM and FM FM only None of these AM only Both AM and FM ANSWER DOWNLOAD EXAMIANS APP
Communication Systems For telegraphy the most commonly used modulation system is PCM FSK Single tone modulation Two tone modulation PCM FSK Single tone modulation Two tone modulation 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 The disadvantage of FM over AM is that High modulating power is needed Noise is very high for high frequency Large bandwidth is required High output power is needed High modulating power is needed Noise is very high for high frequency Large bandwidth is required High output power is needed ANSWER DOWNLOAD EXAMIANS APP
Communication Systems To eliminate ghosts in the picture Connect a booster Use a longer transmission line Change the antenna orientation of location Twist the transmission line Connect a booster Use a longer transmission line Change the antenna orientation of location Twist the transmission line ANSWER DOWNLOAD EXAMIANS APP
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