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Measurements & InstrumentationAdvanced Measurement

For a symmetrical square wave alternating between +10 V and -10 V, the RMS voltage is?

  • A5 V
  • B7.07 V
  • C10 V
  • D20 V
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Correct Answer: C. 10 V
Explanation: The square of the waveform is constantly 100 V², so its mean square is 100 and Vrms=10 V.
Reference: Standard measurements and instrumentation: advanced measurement
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