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The preamplifier is incorporated in the transducer housing to maximize interference signals being picked up.

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The preamplifier is incorporated in the transducer housing to maximize interference signals being picked up.

(a) True

(b) False

I have been asked this question in an interview.

Query is from Recording System topic in portion Foetal Monitoring Instruments of Biomedical Instrumentation

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Correct choice is (b) False

To explain: The preamplifier is incorporated in the transducer housing to minimize interference signals being picked up. Much of the random noise is eliminated during this process and the record on paper after this stage is called foetal phonocardiograph.

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