Communication Systems The characteristic impedance of a twin wire feeder used for TV signals is about 1000 ohm 100 ohm 300 ohm 500 ohm 1000 ohm 100 ohm 300 ohm 500 ohm ANSWER DOWNLOAD EXAMIANS APP
Communication Systems The direction of rotation of a CD is Clockwise Clockwise or anticlockwise depending on frequency of data stored Mostly anticlockwise but some times clockwise Anticlockwise Clockwise Clockwise or anticlockwise depending on frequency of data stored Mostly anticlockwise but some times clockwise Anticlockwise ANSWER DOWNLOAD EXAMIANS APP
Communication Systems Which of the following is an indirect way of generating FM? Reactance bipolar transistor Reactance FET modulator Armstrong modulator Varactor diode modulator Reactance bipolar transistor Reactance FET modulator Armstrong modulator Varactor diode modulator 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 None of these It results in better reception It reduces the bandwidth requirement to half It avoids phase distortion at low frequencies None of these It results in better reception ANSWER DOWNLOAD EXAMIANS APP
Communication Systems For AM receivers the standard IF frequency is 455 kHz 10.7 MHz 106 kHz 1.07 MHz 455 kHz 10.7 MHz 106 kHz 1.07 MHz ANSWER DOWNLOAD EXAMIANS APP
Communication Systems Circular polarization Is useful in reducing depolarization effect on received wave Is useful in discrimination between reception of adjacent beams Involves critical alignment of transmitting and receiving antenna None of these Is useful in reducing depolarization effect on received wave Is useful in discrimination between reception of adjacent beams Involves critical alignment of transmitting and receiving antenna None of these ANSWER DOWNLOAD EXAMIANS APP
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