Communication Systems The characteristic impedance of a twin wire feeder used for TV signals is about 300 ohm 100 ohm 500 ohm 1000 ohm 300 ohm 100 ohm 500 ohm 1000 ohm ANSWER DOWNLOAD EXAMIANS APP
Communication Systems A buffer amplifier is None of these A high gain D.C. amplifier A double-tuned amplifier A cathode follower stage None of these A high gain D.C. amplifier A double-tuned amplifier A cathode follower stage 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 200 200 and 100.1 200 and 1.01 200 and 10.01 200 and 200 200 and 100.1 200 and 1.01 ANSWER DOWNLOAD EXAMIANS APP
Communication Systems To eliminate ghosts in the picture Change the antenna orientation of location Connect a booster Twist the transmission line Use a longer transmission line Change the antenna orientation of location Connect a booster Twist the transmission line Use a longer transmission line ANSWER DOWNLOAD EXAMIANS APP
Communication Systems A three stage telephone switching structure is to have 128 input and 128 output terminals. There are 16 first stage and 16 third stage matrices. To avoid blocking the number of intermediate paths required is 1 8 16 15 1 8 16 15 ANSWER DOWNLOAD EXAMIANS APP
Communication Systems For a low level AM system, the amplifiers modulated stage must be Class C amplifiers Linear devices Harmonic devices Non-linear devices Class C amplifiers Linear devices Harmonic devices Non-linear devices ANSWER DOWNLOAD EXAMIANS APP
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