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25-09-2021 Signals & Systems

Q. Which of the following is an example of physical device which adds the signals?

A. Radio
B. Audio mixer
C. Frequency divider
D. Subtractor

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Dapzoi Verified
Commented on 2021-09-25 13:13:45 (IST)
Answer: B

Explanation: Audio mixer is a device which combines music and voice signals. It is given by Y (t) = x1 (t) + x2 (t).