Communication Systems The modulation index of an FM is changed from 0 to 1. How does the transmitted power change? Gets halved Remains unchanged Gets doubled Gets increased by 50 percent Gets halved Remains unchanged Gets doubled Gets increased by 50 percent ANSWER DOWNLOAD EXAMIANS APP
Communication Systems For telegraphy the most commonly used modulation system is PCM Single tone modulation FSK Two tone modulation PCM Single tone modulation FSK Two tone modulation ANSWER DOWNLOAD EXAMIANS APP
Communication Systems If output power of a radio receiver is doubled, its volume is increased by __________ dB. 2 1 3 -3 2 1 3 -3 ANSWER DOWNLOAD EXAMIANS APP
Communication Systems PAM stands for Pulse Analogue Modulation Phase Amplitude Modulation Phase Analogue Modulation Pulse Amplitude Modulation Pulse Analogue Modulation Phase Amplitude Modulation Phase Analogue Modulation Pulse Amplitude Modulation ANSWER DOWNLOAD EXAMIANS APP
Communication Systems FM transmitting and receiving equipment as compared to AM equipment is Almost equally costly None of these Costly Cheaper Almost equally costly None of these Costly Cheaper ANSWER DOWNLOAD EXAMIANS APP
Communication Systems When the length of antenna is a whole wavelength The radiation is maximum in all directions The radiation at right angles is zero The radiation is zero in all directions The radiation at right angles is maximum The radiation is maximum in all directions The radiation at right angles is zero The radiation is zero in all directions The radiation at right angles is maximum ANSWER DOWNLOAD EXAMIANS APP
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