Communication Systems Fourier analysis indicate that a square wave can be represented as A fundamental sine wave and even harmonics A fundamental sine wave and harmonics A fundamental sine wave and odd harmonics Fundamental and subharmonic sine waves A fundamental sine wave and even harmonics A fundamental sine wave and harmonics A fundamental sine wave and odd harmonics Fundamental and subharmonic sine waves ANSWER DOWNLOAD EXAMIANS APP
Communication Systems If sampling is done at the rate of 10 kHz. The bandwidth required is 70 kHz 35 kHz 1280 kHz 10 kHz 70 kHz 35 kHz 1280 kHz 10 kHz ANSWER DOWNLOAD EXAMIANS APP
Communication Systems Which one of the following is analog? Differential PCM PCM PWM Delta modulation Differential PCM PCM PWM Delta modulation ANSWER DOWNLOAD EXAMIANS APP
Communication Systems In EM waves, polarization Is always vertical in an isotropic medium Is due to transverse nature of waves Results from longitudinal nature of waves Is caused by reflection Is always vertical in an isotropic medium Is due to transverse nature of waves Results from longitudinal nature of waves Is caused by reflection ANSWER DOWNLOAD EXAMIANS APP
Communication Systems In case of low level amplitude modulation system, the amplifiers following the modulated stage must be Linear devices Non-linear devices Harmonic devices Class C amplifiers Linear devices Non-linear devices Harmonic devices Class C amplifiers ANSWER DOWNLOAD EXAMIANS APP
Communication Systems In Modulation, “carrier” is 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 Resultant wave ANSWER DOWNLOAD EXAMIANS APP
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