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Measurements & InstrumentationData Acquisition

According to the sampling theorem, a signal band-limited to 4 kHz requires a sampling frequency of at least?

  • A2 kHz
  • B4 kHz
  • C8 kHz
  • D16 kHz
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Correct Answer: C. 8 kHz
Explanation: The Nyquist rate is twice the highest signal frequency, so at least 8 kHz is required ideally.
Reference: Standard measurements and instrumentation: data acquisition
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