A differentiator is usually not a part of a control system because it______________?
Correct answer: C. increases input noise
- A. reduces damping
- B. reduces the gain margin
- C. increases input noise
- D. increases error
Explanation
Differentiation magnifies high-frequency components, including unwanted measurement noise. This noise amplification is why an ideal differentiator is generally avoided or filtered in practical control systems.
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