Physics · Transformers

What effect does excessive heat in a power transformer have on its windings?

Verified Solution4 OptionsUpdated: October 2026👁️1 View

1It has no significant effect on the lifespan.
2It improves the dielectric insulation performance.
3It increases the overall transformer efficiency.
4It degrades the insulation resistance and can cause inter-turn short circuits.✓

Correct answer

It degrades the insulation resistance and can cause inter-turn short circuits.

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