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
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 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 Amplitude of distant sidebands first increases, then decreases ANSWER DOWNLOAD EXAMIANS APP
Communication Systems In a TV receiver antenna the length of reflector rod May be equal, more or less than that of dipole Is less than that of dipole Is the same as that of dipole Is more than that of dipole May be equal, more or less than that of dipole Is less than that of dipole Is the same as that of dipole Is more than that of dipole ANSWER DOWNLOAD EXAMIANS APP
Communication Systems Under ordinary circumstances, impulse noise can be reduced in None of these Both AM and FM FM only AM only None of these Both AM and FM FM only AM only ANSWER DOWNLOAD EXAMIANS APP
Communication Systems Which of the following is a digital modulation technique? DM PCM All PSK DM PCM All PSK ANSWER DOWNLOAD EXAMIANS APP
Communication Systems Which of the following is an indirect way of generating FM? Reactance FET modulator Reactance bipolar transistor Varactor diode modulator Armstrong modulator Reactance FET modulator Reactance bipolar transistor Varactor diode modulator Armstrong modulator ANSWER DOWNLOAD EXAMIANS APP
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