Communication Systems Which of the following is a digital modulation technique? PCM PSK All DM PCM PSK All DM ANSWER DOWNLOAD EXAMIANS APP
Communication Systems SSB can be generated by All of these Filter method Phase cancellation method Good attenuation characteristics All of these Filter method Phase cancellation method Good attenuation characteristics ANSWER DOWNLOAD EXAMIANS APP
Communication Systems When the length of antenna is a whole wavelength The radiation at right angles is zero The radiation is zero in all directions The radiation is maximum in all directions The radiation at right angles is maximum The radiation at right angles is zero The radiation is zero in all directions The radiation is maximum in all directions The radiation at right angles is maximum ANSWER DOWNLOAD EXAMIANS APP
Communication Systems To eliminate ghosts in the picture 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 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? Gets increased by 50 percent Gets halved Remains unchanged Gets doubled Gets increased by 50 percent Gets halved Remains unchanged Gets doubled ANSWER DOWNLOAD EXAMIANS APP
Communication Systems For a low level AM system, the amplifiers modulated stage must be Harmonic devices Non-linear devices Class C amplifiers Linear devices Harmonic devices Non-linear devices Class C amplifiers Linear devices ANSWER DOWNLOAD EXAMIANS APP
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