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Arc Voltage

During circuit interruption, what does the term arc voltage refer to?
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Answer & Explanation
Correct AnswerB. The voltage appearing across contacts while the arc is maintained

Quick Explanation

Arc voltage is the voltage drop across the circuit-breaker contacts while an arc is actually present between them. It exists during the arcing interval and is distinct from recovery or restriking voltage.

Arc Voltage explanatory diagram

Detailed Explanation

Correct Answer

B — The voltage appearing across contacts while the arc is maintained

Explanation

Arc voltage is the voltage drop across the circuit-breaker contacts while an arc is actually present between them. It exists during the arcing interval and is distinct from recovery or restriking voltage.

Key Concept

Arc Voltage

Exam Point

Arc present → arc voltage; arc extinguished → recovery/restriking concepts.

Quick Trick

Arc present → arc voltage; arc extinguished → recovery/restriking concepts.

Exam Tip

Arc present → arc voltage; arc extinguished → recovery/restriking concepts.

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