Communication Systems A woofer should be fed from the input through a Band stop filter Band pass filter High pass filter Low pass filter Band stop filter Band pass filter High pass filter Low pass filter 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 doubled Remains unchanged Gets halved Gets increased by 50 percent Gets doubled Remains unchanged Gets halved ANSWER DOWNLOAD EXAMIANS APP
Communication Systems If sampling is done at the rate of 10 kHz. The bandwidth required is 10 kHz 1280 kHz 35 kHz 70 kHz 10 kHz 1280 kHz 35 kHz 70 kHz 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 first increases, then decreases Amplitude of distant sidebands remains constant Amplitude of distant sidebands increases Amplitude of distant sidebands decreases Amplitude of distant sidebands first increases, then decreases Amplitude of distant sidebands remains constant Amplitude of distant sidebands increases Amplitude of distant sidebands decreases ANSWER DOWNLOAD EXAMIANS APP
Communication Systems One of the advantages of base modulation over collector modulation of a transistor class C amplifier is High power output per transistor Improved efficiency Better linearity The lower modulating power requirement High power output per transistor Improved efficiency Better linearity The lower modulating power requirement ANSWER DOWNLOAD EXAMIANS APP
Communication Systems The main function of a balanced modulator is to Limit noise picked by a receiver Produce balanced modulation of a carrier wave Suppress carrier signal in order to create a single-sideband or double sideband Produce 100% modulation Limit noise picked by a receiver Produce balanced modulation of a carrier wave Suppress carrier signal in order to create a single-sideband or double sideband Produce 100% modulation ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS