Communication Systems For telegraphy the most commonly used modulation system is PCM FSK Single tone modulation Two tone modulation PCM FSK Single tone modulation Two tone modulation ANSWER DOWNLOAD EXAMIANS APP
Communication Systems In a TV receiver antenna the length of reflector rod Is more than that of dipole Is less than that of dipole May be equal, more or less than that of dipole Is the same as that of dipole Is more than that of dipole Is less than that of dipole May be equal, more or less than that of dipole Is the same as that of dipole ANSWER DOWNLOAD EXAMIANS APP
Communication Systems VSB modulation is preferred in TV because It results in better reception It avoids phase distortion at low frequencies None of these It reduces the bandwidth requirement to half It results in better reception It avoids phase distortion at low frequencies None of these It reduces the bandwidth requirement to half ANSWER DOWNLOAD EXAMIANS APP
Communication Systems The main function of a balanced modulator is to Suppress carrier signal in order to create a single-sideband or double sideband Limit noise picked by a receiver Produce 100% modulation Produce balanced modulation of a carrier wave Suppress carrier signal in order to create a single-sideband or double sideband Limit noise picked by a receiver Produce 100% modulation Produce balanced modulation of a carrier wave ANSWER DOWNLOAD EXAMIANS APP
Communication Systems In Modulation, “carrier” is Resultant wave Voltage with constant frequency, phase or amplitude Speech voltage to be transmitted Voltage for which frequency, phase or amplitude is varied Resultant wave Voltage with constant frequency, phase or amplitude Speech voltage to be transmitted Voltage for which frequency, phase or amplitude is varied ANSWER DOWNLOAD EXAMIANS APP
Communication Systems PAM stands for Phase Analogue Modulation Pulse Amplitude Modulation Phase Amplitude Modulation Pulse Analogue Modulation Phase Analogue Modulation Pulse Amplitude Modulation Phase Amplitude Modulation Pulse Analogue Modulation ANSWER DOWNLOAD EXAMIANS APP
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