Communication Systems Which of the following is a digital modulation technique? All PSK PCM DM All PSK PCM DM ANSWER DOWNLOAD EXAMIANS APP
Communication Systems A woofer should be fed from the input through a Band stop filter Low pass filter Band pass filter High pass filter Band stop filter Low pass filter Band pass filter High pass filter ANSWER DOWNLOAD EXAMIANS APP
Communication Systems If in a broadcasting studio, a 1000 kHz carrier is modulated by an audio signal of frequency range 100-5000 kHz, the width of channel is __________ kHz. 10 5 4.9 995 10 5 4.9 995 ANSWER DOWNLOAD EXAMIANS APP
Communication Systems For a given carrier wave, maximum undistorted power is transmitted when value of modulation is 0.5 1 0.8 0.5 1 0.8 ANSWER DOWNLOAD EXAMIANS APP
Communication Systems The disadvantage of FM over AM is that High modulating power is needed Large bandwidth is required High output power is needed Noise is very high for high frequency High modulating power is needed Large bandwidth is required High output power is needed Noise is very high for high frequency ANSWER DOWNLOAD EXAMIANS APP
Communication Systems Which of the following does not cause losses in optical fibre cables? Stepped index operation Impurities Attenuation in glass Microbending Stepped index operation Impurities Attenuation in glass Microbending ANSWER DOWNLOAD EXAMIANS APP
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