Which thermal consequence occurs when transformer oil oxidation accelerates due to prolonged high operating temperatures?

💡 Explanation

When oil oxidation accelerates, polymerization produces sludge and acids because high temperatures promote oxidation reactions, reducing the insulating capabilities of the oil. Therefore decreased dielectric strength results, rather than reduced eddy current losses, increased insulation lifespan, or improved heat transfer, each requiring distinct underlying mechanisms or conditions.

• Which bias condition prevents current flow across a diode junction?
• Which limitation arises when excessively increasing stray capacitance within a resonant power converter circuit?
• Which outcome occurs when gasoline direct injection (GDI) injectors experience sustained low fuel flow rates?
• Which outcome occurs when a microwave antenna's radome accumulates heavy, wet snow?
• Which risk increases significantly when an aircraft’s slats are deployed asymmetrically during flight?
• Which risk increases significantly when a drone's airspeed drops excessively?