hard20 pts · first answer countsadcsignal-processing

A phantom 100 Hz signal

An ADC samples at 1 kHz with no anti-aliasing filter. The input has a strong 900 Hz component. What do you see in the sampled data?

A.A 100 Hz signal that is not really thereB.A 900 Hz signal at reduced amplitudeC.Nothing, because 900 Hz is filtered automaticallyD.A 1.9 kHz signal

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