Communication Systems When the length of antenna is a whole wavelength The radiation is maximum in all directions The radiation is zero in all directions The radiation at right angles is zero The radiation at right angles is maximum The radiation is maximum in all directions The radiation is zero in all directions The radiation at right angles is zero The radiation at right angles is maximum ANSWER DOWNLOAD EXAMIANS APP
Communication Systems The direction of rotation of a CD is Mostly anticlockwise but some times clockwise Anticlockwise Clockwise or anticlockwise depending on frequency of data stored Clockwise Mostly anticlockwise but some times clockwise Anticlockwise Clockwise or anticlockwise depending on frequency of data stored Clockwise 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 100.1 200 and 1.01 200 and 200 200 and 10.01 200 and 100.1 200 and 1.01 200 and 200 ANSWER DOWNLOAD EXAMIANS APP
Communication Systems To eliminate ghosts in the picture Twist the transmission line Use a longer transmission line Connect a booster Change the antenna orientation of location Twist the transmission line Use a longer transmission line Connect a booster Change the antenna orientation of location ANSWER DOWNLOAD EXAMIANS APP
Communication Systems As per Shannon-Hartley theorem, a noise less Gaussian channel has Zero capacity Infinite capacity None of these Small capacity Zero capacity Infinite capacity None of these Small capacity ANSWER DOWNLOAD EXAMIANS APP
Communication Systems Commercial Frequency deviation of FM is 70 kHz 75 kHz 80 kHz 65 kHz 70 kHz 75 kHz 80 kHz 65 kHz ANSWER DOWNLOAD EXAMIANS APP
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