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What is employed to measure the variable that is to be controlled by the feedback process?

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in Biomedical Instrumentation by (76.6k points)
What is employed to measure the variable that is to be controlled by the feedback process?

(a) Transducers

(b) Sensing device

(c) Tape recorder

(d) Piezo-electric device

This question was posed to me in a national level competition.

This interesting question is from Cardiac Arrhythmias in division Arrhythmia and Ambulatory Monitoring Instruments of Biomedical Instrumentation

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Best answer
Correct option is (a) Transducers

Best explanation: Biofeedback instrumentation for the measurement of EMG, temperature and pulse/heart rate is not different from other instruments used for the measurement of physiological variables. Transducers and amplifiers are employed to measure the variable that is to be controlled by the feedback process.

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