Communication Systems Skip distance depends on time of day and angle of incidence. False True False True ANSWER DOWNLOAD EXAMIANS APP
Communication Systems The modulation index of an FM is changed from 0 to 1. How does the transmitted power change? Remains unchanged Gets halved Gets doubled Gets increased by 50 percent Remains unchanged Gets halved Gets doubled Gets increased by 50 percent ANSWER DOWNLOAD EXAMIANS APP
Communication Systems Which of the following is an indirect way of generating FM? Reactance FET modulator Varactor diode modulator Reactance bipolar transistor Armstrong modulator Reactance FET modulator Varactor diode modulator Reactance bipolar transistor Armstrong modulator ANSWER DOWNLOAD EXAMIANS APP
Communication Systems Full duplex operation permits transmission in both directions at the same time. True False True False ANSWER DOWNLOAD EXAMIANS APP
Communication Systems The characteristic impedance of a twin wire feeder used for TV signals is about 500 ohm 1000 ohm 100 ohm 300 ohm 500 ohm 1000 ohm 100 ohm 300 ohm ANSWER DOWNLOAD EXAMIANS APP
Communication Systems In Pulse Code Modulation system Quantising noise can be reduced by decreasing the number of standard levels Large bandwidth is required Quantising noise can be overcome by companding Suffers from the disadvantage of its incompatibly with TDM Quantising noise can be reduced by decreasing the number of standard levels Large bandwidth is required Quantising noise can be overcome by companding Suffers from the disadvantage of its incompatibly with TDM ANSWER DOWNLOAD EXAMIANS APP
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