Communication Systems Which of the following does not cause losses in optical fibre cables? Stepped index operation Impurities Microbending Attenuation in glass Stepped index operation Impurities Microbending Attenuation in glass ANSWER DOWNLOAD EXAMIANS APP
Communication Systems Which of the following is an indirect way of generating FM? Reactance FET modulator Varactor diode modulator Reactance bipolar transistor Armstrong modulator Reactance FET modulator Varactor diode modulator Reactance bipolar transistor Armstrong modulator 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. 113 102.3 80.9 70.2 113 102.3 80.9 70.2 ANSWER DOWNLOAD EXAMIANS APP
Communication Systems The modulation index of an FM is changed from 0 to 1. How does the transmitted power change? Gets increased by 50 percent Gets doubled Remains unchanged Gets halved Gets increased by 50 percent Gets doubled Remains unchanged Gets halved 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 If output power of a radio receiver is doubled, its volume is increased by __________ dB. 3 1 -3 2 3 1 -3 2 ANSWER DOWNLOAD EXAMIANS APP
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