Which risk increases when a transformer's core lamination insulation fails in a power distribution system?

💡 Explanation

When lamination insulation fails, circulating eddy currents increase within the core because the laminations are no longer electrically isolated, resulting in localized overheating due to I^2R losses. Therefore core overheating results, rather than altered capacitance, flashover, or harmonic distortion, which stem from alternative electrical failures.

• Which outcome occurs when a transformer's impedance is mismatched in a parallel substation?
• Which outcome is triggered within silicon when subjected to avalanche breakdown?
• Which risk increases when an engine's multi-point fuel injector experiences insufficient rail pressure?
• Which catastrophic outcome results when inadequate lateral bracing prevents steel column flange movement?
• Which robotic motion error occurs when encoder resolution is insufficient during inverse kinematics calculations?
• Which risk increases when an antenna array's signal suffers element pattern squint?