Communication Systems When the length of antenna is a whole wavelength The radiation at right angles is zero The radiation is maximum in all directions The radiation is zero in all directions The radiation at right angles is maximum The radiation at right angles is zero The radiation is maximum in all directions The radiation is zero in all directions The radiation at right angles is maximum ANSWER DOWNLOAD EXAMIANS APP
Communication Systems For a given carrier wave, maximum undistorted power is transmitted when value of modulation is 0.5 0.8 1 0.5 0.8 1 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 The frequency range of 300 kHz to 3000 kHz is known as Low frequency Medium frequency High frequency Very high frequency Low frequency Medium frequency High frequency Very high frequency ANSWER DOWNLOAD EXAMIANS APP
Communication Systems A telephone channel requires a bandwidth of about 1 kHz 10 kHz 50 kHz 3 kHz 1 kHz 10 kHz 50 kHz 3 kHz 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 8 1 16 15 8 1 16 15 ANSWER DOWNLOAD EXAMIANS APP
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