Communication Systems The colour of an object is decided by None of these Reflected colour for opaque object and wavelength transmitted through it for transparent objects The wavelength transmitted through it The reflected colour None of these Reflected colour for opaque object and wavelength transmitted through it for transparent objects The wavelength transmitted through it The reflected colour ANSWER DOWNLOAD EXAMIANS APP
Communication Systems The characteristic impedance of a twin wire feeder used for TV signals is about 100 ohm 1000 ohm 500 ohm 300 ohm 100 ohm 1000 ohm 500 ohm 300 ohm ANSWER DOWNLOAD EXAMIANS APP
Communication Systems Which one of the following is analog? PWM Differential PCM PCM Delta modulation PWM Differential PCM PCM Delta modulation ANSWER DOWNLOAD EXAMIANS APP
Communication Systems A telephone channel requires a bandwidth of about 50 kHz 10 kHz 1 kHz 3 kHz 50 kHz 10 kHz 1 kHz 3 kHz ANSWER DOWNLOAD EXAMIANS APP
Communication Systems An FM radio receiver which is tuned to a 91.6 MHz broadcast station may receive an image frequency of __________ MHz. 80.9 70.2 102.3 113 80.9 70.2 102.3 113 ANSWER DOWNLOAD EXAMIANS APP
Communication Systems Which of the following does not cause losses in optical fibre cables? Microbending Attenuation in glass Impurities Stepped index operation Microbending Attenuation in glass Impurities Stepped index operation ANSWER DOWNLOAD EXAMIANS APP
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