Communication Systems A woofer should be fed from the input through a Band stop filter Low pass filter High pass filter Band pass filter Band stop filter Low pass filter High pass filter Band pass filter ANSWER DOWNLOAD EXAMIANS APP
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 first increases, then decreases Amplitude of distant sidebands decreases Amplitude of distant sidebands increases Amplitude of distant sidebands remains constant Amplitude of distant sidebands first increases, then decreases Amplitude of distant sidebands decreases ANSWER DOWNLOAD EXAMIANS APP
Communication Systems In a FM receiver, amplitude limiter Reduces the amplitude of signals None of these Amplifiers low frequency signals Eliminates any change in amplitude of received FM signals Reduces the amplitude of signals None of these Amplifiers low frequency signals Eliminates any change in amplitude of received FM signals ANSWER DOWNLOAD EXAMIANS APP
Communication Systems As per Shannon-Hartley theorem, a noise less Gaussian channel has None of these Small capacity Zero capacity Infinite capacity None of these Small capacity Zero capacity Infinite capacity ANSWER DOWNLOAD EXAMIANS APP
Communication Systems What is the purpose of peak clipper circuits in radio transmitters? To regulate oscillator I/P voltage To prevent overmodulation To reduce bandwidth To increase bandwidth To regulate oscillator I/P voltage To prevent overmodulation To reduce bandwidth To increase bandwidth 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 doubled Gets increased by 50 percent Remains unchanged Gets halved Gets doubled Gets increased by 50 percent Remains unchanged Gets halved ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS