Communication Systems The modulation index of an FM is changed from 0 to 1. How does the transmitted power change? Gets doubled Remains unchanged Gets halved Gets increased by 50 percent Gets doubled Remains unchanged Gets halved Gets increased by 50 percent ANSWER DOWNLOAD EXAMIANS APP
Communication Systems If output power of a radio receiver is doubled, its volume is increased by __________ dB. 3 2 1 -3 3 2 1 -3 ANSWER DOWNLOAD EXAMIANS APP
Communication Systems SSB can be generated by Filter method All of these Good attenuation characteristics Phase cancellation method Filter method All of these Good attenuation characteristics Phase cancellation method ANSWER DOWNLOAD EXAMIANS APP
Communication Systems An FM radio receiver which is tuned to a 91.6 MHz broadcast station may receive an image frequency of __________ MHz. 70.2 102.3 113 80.9 70.2 102.3 113 80.9 ANSWER DOWNLOAD EXAMIANS APP
Communication Systems Which of the following is a digital modulation technique? DM All PCM PSK DM All PCM PSK ANSWER DOWNLOAD EXAMIANS APP
Communication Systems In case of low level amplitude modulation system, the amplifiers following the modulated stage must be Harmonic devices Class C amplifiers Non-linear devices Linear devices Harmonic devices Class C amplifiers Non-linear devices Linear devices ANSWER DOWNLOAD EXAMIANS APP