Communication Systems The colour of an object is decided by The reflected colour Reflected colour for opaque object and wavelength transmitted through it for transparent objects The wavelength transmitted through it None of these The reflected colour Reflected colour for opaque object and wavelength transmitted through it for transparent objects The wavelength transmitted through it None of these ANSWER DOWNLOAD EXAMIANS APP
Communication Systems To eliminate ghosts in the picture Use a longer transmission line Twist the transmission line Change the antenna orientation of location Connect a booster Use a longer transmission line Twist the transmission line Change the antenna orientation of location Connect a booster ANSWER DOWNLOAD EXAMIANS APP
Communication Systems For AM receivers the standard IF frequency is 1.07 MHz 455 kHz 10.7 MHz 106 kHz 1.07 MHz 455 kHz 10.7 MHz 106 kHz ANSWER DOWNLOAD EXAMIANS APP
Communication Systems When the length of antenna is a whole wavelength The radiation at right angles is maximum The radiation at right angles is zero The radiation is zero in all directions The radiation is maximum in all directions The radiation at right angles is maximum The radiation at right angles is zero The radiation is zero in all directions The radiation is maximum in all directions 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 200 200 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 ANSWER DOWNLOAD EXAMIANS APP
Communication Systems In Pulse Code Modulation system Quantising noise can be reduced by decreasing the number of standard levels Large bandwidth is required Quantising noise can be overcome by companding Suffers from the disadvantage of its incompatibly with TDM Quantising noise can be reduced by decreasing the number of standard levels Large bandwidth is required Quantising noise can be overcome by companding Suffers from the disadvantage of its incompatibly with TDM ANSWER DOWNLOAD EXAMIANS APP
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