Which consequence results when a power transformer's cellulose insulation degrades excessively?

💡 Explanation

Dielectric breakdown causes short circuiting because the cellulose insulation's increased conductivity due to degradation reduces its dielectric strength, leading to arc formation and current flow through the insulation. Therefore, failure occurs, rather than magnetic saturation or eddy current increases, which happen with core changes.

• In a cantilevered steel beam supporting a balcony, which consequence arises when sustained vibrations match its natural frequency?
• Which outcome occurs when forging magnesium alloys near the recrystallization temperature?
• Which outcome occurs when vapor bubbles collapse near the control valve in a hydraulic actuator?
• Which outcome occurs when dithering is disabled on an electro-hydraulic servo valve?
• Which consequence results when an encoder disk's grid spacing degrades in a CNC milling machine's spindle motor?
• Which outcome accelerates degradation when high sulfur fuel is combusted in ship's diesel engine?