ITPEC FE Morning April 2022 Question 6
ITPEC FE Morning April 2022 — Question 6 of 80
Feedback control — detects a disturbance and takes corrective action to prevent its influence on output.
How it works:
- Sensor detects a deviation (disturbance)
- Controller applies a corrective action
- Goal: prevent the disturbance from affecting the output
Why not others:
- (b) "influence is amplified" — describes positive feedback (instability, not control)
- (c) "predicts disturbance" — this is feedforward control (anticipatory)
- (d) "after detecting the influence" — implies the disturbance already affected the output; feedback control aims to prevent that influence
Key rule: Feedback control = detect disturbance → correct → prevent impact on output.
AI-generated — may contain errors
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