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← TechnologyWhich risk increases significantly when a quadcopter's control algorithm suffers from phase lag?
A)Oscillations become dangerously amplified✓
B)Battery drains power very slowly
C)Brushless motors overheat excessively
D)GPS lock becomes very unreliable
💡 Explanation
Unstable oscillations are amplified because negative feedback lags the error signal, resulting in positive feedback; the **Nyquist stability criterion** explains this. Therefore, instability arises, rather than stable damping behavior with corrected actions or unrelated motor/GPS issues.
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