Communication Systems Which of the following is a digital modulation technique? PSK All PCM DM PSK All PCM DM ANSWER DOWNLOAD EXAMIANS APP
Communication Systems For a low level AM system, the amplifiers modulated stage must be Linear devices Class C amplifiers Non-linear devices Harmonic devices Linear devices Class C amplifiers Non-linear devices Harmonic devices ANSWER DOWNLOAD EXAMIANS APP
Communication Systems Skip distance depends on time of day and angle of incidence. False True False True ANSWER DOWNLOAD EXAMIANS APP
Communication Systems For a given carrier wave, maximum undistorted power is transmitted when value of modulation is 0.8 1 0.5 0.8 1 0.5 ANSWER DOWNLOAD EXAMIANS APP
Communication Systems One of the advantages of base modulation over collector modulation of a transistor class C amplifier is The lower modulating power requirement Improved efficiency High power output per transistor Better linearity The lower modulating power requirement Improved efficiency High power output per transistor Better linearity ANSWER DOWNLOAD EXAMIANS APP
Communication Systems To eliminate ghosts in the picture Change the antenna orientation of location Use a longer transmission line Twist the transmission line Connect a booster Change the antenna orientation of location Use a longer transmission line Twist the transmission line Connect a booster ANSWER DOWNLOAD EXAMIANS APP
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