Communication Systems The characteristic impedance of a twin wire feeder used for TV signals is about 100 ohm 500 ohm 1000 ohm 300 ohm 100 ohm 500 ohm 1000 ohm 300 ohm ANSWER DOWNLOAD EXAMIANS APP
Communication Systems FM transmitting and receiving equipment as compared to AM equipment is Cheaper Costly None of these Almost equally costly Cheaper Costly None of these Almost equally costly ANSWER DOWNLOAD EXAMIANS APP
Communication Systems VSB modulation is preferred in TV because It reduces the bandwidth requirement to half It avoids phase distortion at low frequencies It results in better reception None of these It reduces the bandwidth requirement to half It avoids phase distortion at low frequencies It results in better reception None of these ANSWER DOWNLOAD EXAMIANS APP
Communication Systems Skip distance depends on time of day and angle of incidence. True False True False 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 15 8 1 16 15 8 1 16 ANSWER DOWNLOAD EXAMIANS APP
Communication Systems In TV systems, equalising pulses are sent during Horizontal retrace Serrations Vertical blanking Horizontal blanking Horizontal retrace Serrations Vertical blanking Horizontal blanking ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS