Communication Systems DVD uses Laser beam for both recording and playback Laser beam for recording and video head for playback None of these Video head for recording and laser beam for playback Laser beam for both recording and playback Laser beam for recording and video head for playback None of these Video head for recording and laser beam for playback ANSWER DOWNLOAD EXAMIANS APP
Communication Systems Which of the following is a digital modulation technique? PSK All PCM DM PSK All PCM DM ANSWER DOWNLOAD EXAMIANS APP
Communication Systems It is found that a ship to ship communication suffers from fading. This can be avoided by using Broad band antenna Space diversity Frequency diversity Directional antenna Broad band antenna Space diversity Frequency diversity Directional antenna ANSWER DOWNLOAD EXAMIANS APP
Communication Systems To eliminate ghosts in the picture Twist the transmission line Change the antenna orientation of location Use a longer transmission line Connect a booster Twist the transmission line Change the antenna orientation of location Use a longer transmission line Connect a booster ANSWER DOWNLOAD EXAMIANS APP
Communication Systems What is the purpose of peak clipper circuits in radio transmitters? To prevent overmodulation To increase bandwidth To regulate oscillator I/P voltage To reduce bandwidth To prevent overmodulation To increase bandwidth To regulate oscillator I/P voltage To reduce bandwidth ANSWER DOWNLOAD EXAMIANS APP
Communication Systems In a FM receiver, amplitude limiter Amplifiers low frequency signals Eliminates any change in amplitude of received FM signals None of these Reduces the amplitude of signals Amplifiers low frequency signals Eliminates any change in amplitude of received FM signals None of these Reduces the amplitude of signals ANSWER DOWNLOAD EXAMIANS APP
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