HKIE Professional Assessment - Biomedical Discipline Practice Questions - HKIE Professional Assessment - Biomedical Discipline (Hong Kong Institution Of Engineers) Exam

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During telemetry monitoring of a pulse oximetry plethysmogram, the root-mean-square (RMS) peak signal voltage is measured at 2.5 V, while the accompanying background RMS noise voltage is measured at 25 mV. What is the Signal-to-Noise Ratio (SNR) expressed in decibels (dB)?

40 dB 20 dB 100 dB 50 dB

Correct Answer:

40 dB

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