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 Leak type bias is used in plate modulated class C amplifier to Prevent tuned circuit damping Prevent excessive grid current Prevent over modulation Increase the bandwidth Prevent tuned circuit damping Prevent excessive grid current Prevent over modulation Increase the bandwidth ANSWER DOWNLOAD EXAMIANS APP
Communication Systems If output power of a radio receiver is doubled, its volume is increased by __________ dB. -3 3 1 2 -3 3 1 2 ANSWER DOWNLOAD EXAMIANS APP
Communication Systems Which of the following is an indirect way of generating FM? Varactor diode modulator Armstrong modulator Reactance bipolar transistor Reactance FET modulator Varactor diode modulator Armstrong modulator Reactance bipolar transistor Reactance FET modulator ANSWER DOWNLOAD EXAMIANS APP
Communication Systems The maximum power output of a standard A earth station over the total band allocated to satellite communication is about 0.5 kW 8 kW 50 kW 20 kW 0.5 kW 8 kW 50 kW 20 kW ANSWER DOWNLOAD EXAMIANS APP
Communication Systems A cordless telephone using separate frequencies for transmission in base and portable units is known as Neither A nor B Duplex arrangement Either A or B Half duplex arrangement Neither A nor B Duplex arrangement Either A or B Half duplex arrangement ANSWER DOWNLOAD EXAMIANS APP
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