Electrical Engineering · Electrical Machines
Under severe harmonic conditions, why might a transformer exhibit increased audible noise and vibration, contributing indirectly to thermal fatigue?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1Resonance in winding supports from electromagnetic forces.
- 2Piezoelectric effects in insulation.
- 3Magnetostriction effects amplified by higher-frequency core flux variations.✓
- 4Gas evolution in oil due to localized overheating.
Correct answer
Magnetostriction effects amplified by higher-frequency core flux variations.
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