_____________is the reference input minus the primary feedback?
Correct answer: C. Actuating signal
- A. Manipulated variable
- B. Zero sequence
- C. Actuating signal
- D. Primary feedback
Explanation
The actuating, or error, signal is the algebraic difference between the reference input and the feedback signal, usually written as e(t) = r(t) − b(t). It drives the controlling element in a negative-feedback system.
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