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← TechnologyWhich malfunction results when harmonics distort a three-phase motor circuit?
A)Increased stator winding temperature✓
B)Rotor cage structural fatigue
C)Decreased reactive power demand
D)Reduced core magnetic saturation
💡 Explanation
Increased stator winding temperatures rapidly degrade insulation because harmonic distortion injects higher frequency currents into the motor circuit, leading to increased copper losses via skin effect. Therefore, overheating occurs, rather than other effects due to fundamental frequency behavior.
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