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Engineering

Answered

Question 7
In an application, a sensor outputs data signal at 30KHZ with embedded significant noise at
120 Hz. If you have to design a passive analog filter to reduce the noise by 40dB, how much
percentage of the data signal amplitude will be attenuated (means lost) at the filter output?

A. 92
B. 8
C. 85
D. 15

Answer :

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