Which of the following acts as a protection against high voltage surges due to lightning and switching ?
Correct answer: A. Horn gaps
- A. Horn gaps
- B. Thermal overload relays
- C. Breather
- D. Conservator
Explanation
Horn gaps provide a low-resistance path for lightning and switching surges, diverting them safely to earth. Thermal overload relays respond to excessive current over time, while the breather and conservator serve transformer oil and expansion functions.
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