Communication Systems If output power of a radio receiver is doubled, its volume is increased by __________ dB. 1 3 -3 2 1 3 -3 2 ANSWER DOWNLOAD EXAMIANS APP
Communication Systems Full duplex operation permits transmission in both directions at the same time. True False True False ANSWER DOWNLOAD EXAMIANS APP
Communication Systems In case of low level amplitude modulation system, the amplifiers following the modulated stage must be Harmonic devices Non-linear devices Linear devices Class C amplifiers Harmonic devices Non-linear devices Linear devices Class C amplifiers ANSWER DOWNLOAD EXAMIANS APP
Communication Systems SSB can be generated by All of these Filter method Phase cancellation method Good attenuation characteristics All of these Filter method Phase cancellation method Good attenuation characteristics ANSWER DOWNLOAD EXAMIANS APP
Communication Systems Under ordinary circumstances, impulse noise can be reduced in AM only Both AM and FM FM only None of these AM only Both AM and FM FM only None of these 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 1.01 200 and 10.01 200 and 100.1 200 and 200 200 and 1.01 200 and 10.01 200 and 100.1 200 and 200 ANSWER DOWNLOAD EXAMIANS APP
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