Communication Systems The characteristic impedance of a twin wire feeder used for TV signals is about 100 ohm 500 ohm 1000 ohm 300 ohm 100 ohm 500 ohm 1000 ohm 300 ohm ANSWER DOWNLOAD EXAMIANS APP
Communication Systems Which of the following does not cause losses in optical fibre cables? Microbending Impurities Stepped index operation Attenuation in glass Microbending Impurities Stepped index operation Attenuation in glass ANSWER DOWNLOAD EXAMIANS APP
Communication Systems A modem is classified as low speed if data rate handled is Upto 400 bps Upto 600 bps Upto 250 bps Upto 100 bps Upto 400 bps Upto 600 bps Upto 250 bps Upto 100 bps ANSWER DOWNLOAD EXAMIANS APP
Communication Systems Under ordinary circumstances, impulse noise can be reduced in None of these Both AM and FM AM only FM only None of these Both AM and FM AM only FM only 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. 102.3 80.9 70.2 113 102.3 80.9 70.2 113 ANSWER DOWNLOAD EXAMIANS APP
Communication Systems An audio signal (say from 50 Hz to 10000 Hz) is frequency translated by a carrier having a frequency of 106 Hz. The values of initial (without frequency translation) and final (after frequency translation) fractional change in frequency from one band edge to the other are 200 and 10.01 200 and 1.01 200 and 100.1 200 and 200 200 and 10.01 200 and 1.01 200 and 100.1 200 and 200 ANSWER DOWNLOAD EXAMIANS APP
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