Communication Systems The modulation index of an FM is changed from 0 to 1. How does the transmitted power change? Remains unchanged Gets doubled Gets increased by 50 percent Gets halved Remains unchanged Gets doubled Gets increased by 50 percent Gets halved ANSWER DOWNLOAD EXAMIANS APP
Communication Systems A cordless telephone using separate frequencies for transmission in base and portable units is known as Half duplex arrangement Neither A nor B Duplex arrangement Either A or B Half duplex arrangement Neither A nor B Duplex arrangement Either A or B ANSWER DOWNLOAD EXAMIANS APP
Communication Systems VSB modulation is preferred in TV because None of these It reduces the bandwidth requirement to half It avoids phase distortion at low frequencies It results in better reception None of these It reduces the bandwidth requirement to half It avoids phase distortion at low frequencies It results in better reception 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 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 Amplitude of distant sidebands remains constant Amplitude of distant sidebands increases ANSWER DOWNLOAD EXAMIANS APP
Communication Systems PAM stands for Pulse Amplitude Modulation Phase Analogue Modulation Phase Amplitude Modulation Pulse Analogue Modulation Pulse Amplitude Modulation Phase Analogue Modulation Phase Amplitude Modulation Pulse Analogue Modulation ANSWER DOWNLOAD EXAMIANS APP
Communication Systems For a given carrier wave, maximum undistorted power is transmitted when value of modulation is 0.5 1 0.8 0.5 1 0.8 ANSWER DOWNLOAD EXAMIANS APP
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