Which risk increases when a high-voltage transformer experiences prolonged over-excitation?

💡 Explanation

Core heating escalates because prolonged over-excitation elevates the magnetic flux density, driving saturation and increased eddy current losses; therefore localized overheating exceeds design tolerances, rather than merely influencing capacitance or manageable dielectric changes, under typical conditions.

• Which outcome results when mismatched band gaps contact in series?
• Which mechanism disrupts wireless signal propagation in a dense urban environment during heavy rainfall?
• Which outcome occurs when a transistor's gate voltage is increased beyond the threshold?
• Which risk is amplified with laser-induced graphene formation at elevated pressure?
• Which consequence results when enriched uranium isotopes accumulate in molten salt reactor coolant?
• Which outcome occurs when the degeneracy within semiconductor quantum dot electron wave functions is lifted?