Communication Systems Commercial Frequency deviation of FM is 70 kHz 80 kHz 65 kHz 75 kHz 70 kHz 80 kHz 65 kHz 75 kHz ANSWER DOWNLOAD EXAMIANS APP
Communication Systems It is found that a ship to ship communication suffers from fading. This can be avoided by using Directional antenna Broad band antenna Frequency diversity Space diversity Directional antenna Broad band antenna Frequency diversity Space diversity ANSWER DOWNLOAD EXAMIANS APP
Communication Systems Which of the following is a digital modulation technique? DM PCM PSK All DM PCM PSK All ANSWER DOWNLOAD EXAMIANS APP
Communication Systems To eliminate ghosts in the picture Twist the transmission line 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 ANSWER DOWNLOAD EXAMIANS APP
Communication Systems The disadvantage of FM over AM is that 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 High modulating power is needed Noise is very high for high frequency ANSWER DOWNLOAD EXAMIANS APP
Communication Systems In case of low level amplitude modulation system, the amplifiers following the modulated stage must be Non-linear devices Linear devices Harmonic devices Class C amplifiers Non-linear devices Linear devices Harmonic devices Class C amplifiers ANSWER DOWNLOAD EXAMIANS APP