Communication Systems In practical commercial FM system, channel bandwidth is 88 MHz 100 kHz 108 MHz 150 kHz 88 MHz 100 kHz 108 MHz 150 kHz ANSWER DOWNLOAD EXAMIANS APP
Communication Systems In Modulation, “carrier” is Resultant wave Voltage for which frequency, phase or amplitude is varied Voltage with constant frequency, phase or amplitude Speech voltage to be transmitted Resultant wave Voltage for which frequency, phase or amplitude is varied Voltage with constant frequency, phase or amplitude Speech voltage to be transmitted 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 doubled Gets halved Gets increased by 50 percent Remains unchanged Gets doubled Gets halved Gets increased by 50 percent ANSWER DOWNLOAD EXAMIANS APP
Communication Systems DVD uses Laser beam for both recording and playback Video head for recording and laser beam for playback None of these Laser beam for recording and video head for playback Laser beam for both recording and playback Video head for recording and laser beam for playback None of these Laser beam for recording and video head for playback ANSWER DOWNLOAD EXAMIANS APP
Communication Systems In case of low level amplitude modulation system, the amplifiers following the modulated stage must be Non-linear devices Linear devices Class C amplifiers Harmonic devices Non-linear devices Linear devices Class C amplifiers Harmonic devices 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
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