Communication Systems Which one of the following is analog? Differential PCM PWM Delta modulation PCM Differential PCM PWM Delta modulation PCM ANSWER DOWNLOAD EXAMIANS APP
Communication Systems Which of the following does not cause losses in optical fibre cables? Impurities Microbending Stepped index operation Attenuation in glass Impurities Microbending Stepped index operation Attenuation in glass ANSWER DOWNLOAD EXAMIANS APP
Communication Systems The disadvantage of FM over AM is that High output power is needed Large bandwidth is required Noise is very high for high frequency High modulating power is needed High output power is needed Large bandwidth is required Noise is very high for high frequency High modulating power is needed ANSWER DOWNLOAD EXAMIANS APP
Communication Systems In TV systems, equalising pulses are sent during Horizontal retrace Serrations Vertical blanking Horizontal blanking Horizontal retrace Serrations Vertical blanking Horizontal blanking ANSWER DOWNLOAD EXAMIANS APP
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 halved Gets increased by 50 percent Remains unchanged Gets doubled Gets halved Gets increased by 50 percent ANSWER DOWNLOAD EXAMIANS APP
Communication Systems Commercial Frequency deviation of FM is 75 kHz 80 kHz 70 kHz 65 kHz 75 kHz 80 kHz 70 kHz 65 kHz ANSWER DOWNLOAD EXAMIANS APP
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