The surge phenomenon is particularly important in case of_______________?
Correct answer: C. high voltage transformers
- A. low voltage transformers
- B. medium voltage transformers
- C. high voltage transformers
- D. any of the above
Explanation
Voltage surges become especially dangerous in high-voltage transformers because insulation stress rises sharply with transient overvoltage. Surge protection and proper insulation coordination are therefore essential at high voltage.
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