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A signal of 1 kHz is to be amplified but the...

This question belongs to Electronics And Communications Engineering Analog Electronics
Analog Electronics
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A signal of 1 kHz is to be amplified, but the circuit board and wires pick up and store 60 Hz component from a nearby electric line. If this component is 40 dB higher than the desired signal, what filter stop band attenuation is necessary to ensure the signal remains 20 dB above the interferer level?

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Correct Answer: Option A
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