Aliasing occurs when a signal is sampled: (i) After amplification (ii)

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Module 2: Signal Conditioning Systems

20262m

Aliasing occurs when a signal is sampled:

(i) After amplification
(ii) At twice its frequency
(iii) Below the required sampling rate
(iv) With a low-pass filter

Worked SolutionAI Assisted

Answer: (iii) Below the required sampling rate

If sampling frequency is less than twice the highest signal frequency (Nyquist), high-frequency components appear as false lower frequencies. This is aliasing.

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