Physics · Power Systems
When does the corona effect occur in high-voltage transmission lines?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1When there is a sudden voltage drop across the line
- 2When the electrostatic stress in the air around a high-voltage conductor exceeds the breakdown strength of air✓
- 3Due to mutual induction between two parallel lines
- 4When the charging current of the line exceeds a threshold
Correct answer
When the electrostatic stress in the air around a high-voltage conductor exceeds the breakdown strength of air
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