The arc voltage produced in A.C. circuit breaker is always_____________?
Correct answer: A. in phase with the arc current
- A. in phase with the arc current
- B. lagging the arc current by 90″
- C. leading the arc current by 90°
- D. none of the above
Explanation
The arc behaves approximately like a resistive element, so its voltage is substantially in phase with the arc current. It is therefore not ideally 90 degrees leading or lagging as in a pure reactance.
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