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Q. |
What is the frequency range of amplifier used for a phonocardiograph? |
A. | less than 0 Hz |
B. | 0 to 20 Hz |
C. | 20 to 2000 Hz |
D. | above 2000 Hz |
Answer» C. 20 to 2000 Hz | |
Explanation: The amplifier used for a phonocardiograph has wide bandwidth with a frequency range of about 20 to 2000 Hz. Filters permit selection of suitable frequency bands, so that particular heart sound frequencies can be recorded. |
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