Phase margin is equal to_______________?
Correct answer: A. 180° - phase lag
- A. 180° - phase lag
- B. Phase lag - 180°
- C. Phase lag + 180°
- D. Phase lag + 90°
Explanation
At the gain crossover frequency, phase margin is 180° plus the phase angle, or 180° minus the phase lag when lag is stated as a positive magnitude. Therefore, it is 180° − phase lag.
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