Communication Systems If output power of a radio receiver is doubled, its volume is increased by __________ dB. 2 -3 1 3 2 -3 1 3 ANSWER DOWNLOAD EXAMIANS APP
Communication Systems Circular polarization None of these Involves critical alignment of transmitting and receiving antenna Is useful in reducing depolarization effect on received wave Is useful in discrimination between reception of adjacent beams None of these Involves critical alignment of transmitting and receiving antenna Is useful in reducing depolarization effect on received wave Is useful in discrimination between reception of adjacent beams ANSWER DOWNLOAD EXAMIANS APP
Communication Systems For a given carrier wave, maximum undistorted power is transmitted when value of modulation is 0.8 0.5 1 0.8 0.5 1 ANSWER DOWNLOAD EXAMIANS APP
Communication Systems A woofer should be fed from the input through a Band pass filter Band stop filter Low pass filter High pass filter Band pass filter Band stop filter Low pass filter High 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 remains constant Amplitude of distant sidebands increases Amplitude of distant sidebands first increases, then decreases Amplitude of distant sidebands decreases Amplitude of distant sidebands remains constant Amplitude of distant sidebands increases Amplitude of distant sidebands first increases, then decreases Amplitude of distant sidebands decreases ANSWER DOWNLOAD EXAMIANS APP
Communication Systems Fourier analysis indicate that a square wave can be represented as Fundamental and subharmonic sine waves A fundamental sine wave and odd harmonics A fundamental sine wave and even harmonics A fundamental sine wave and harmonics Fundamental and subharmonic sine waves A fundamental sine wave and odd harmonics A fundamental sine wave and even harmonics A fundamental sine wave and harmonics ANSWER DOWNLOAD EXAMIANS APP
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