Communication Systems The characteristic impedance of a twin wire feeder used for TV signals is about 300 ohm 1000 ohm 500 ohm 100 ohm 300 ohm 1000 ohm 500 ohm 100 ohm ANSWER DOWNLOAD EXAMIANS APP
Communication Systems For attenuation of high frequencies we should use Series capacitance Resistance Shunt capacitance Inductance Series capacitance Resistance Shunt capacitance Inductance 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 16 8 15 1 16 8 15 ANSWER DOWNLOAD EXAMIANS APP
Communication Systems Circular polarization None of these Is useful in reducing depolarization effect on received wave Involves critical alignment of transmitting and receiving antenna Is useful in discrimination between reception of adjacent beams None of these Is useful in reducing depolarization effect on received wave Involves critical alignment of transmitting and receiving antenna Is useful in discrimination between reception of adjacent beams ANSWER DOWNLOAD EXAMIANS APP
Communication Systems If output power of a radio receiver is doubled, its volume is increased by __________ dB. 1 2 3 -3 1 2 3 -3 ANSWER DOWNLOAD EXAMIANS APP
Communication Systems Assertion (A): In FM the frequency of the carrier is varied by the modulating voltageReason (R): FM and PM are two forms of angle modulation. A is wrong but R is correct Both A and R are correct but R is not correct explanation of A Both A and R are correct and R is correct explanation of A A is correct but R is wrong A is wrong but R is correct Both A and R are correct but R is not correct explanation of A Both A and R are correct and R is correct explanation of A A is correct but R is wrong ANSWER DOWNLOAD EXAMIANS APP
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