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What is the temperature at the negative terminal in carbon arc welding?

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in Casting-Forming-Welding II by (119k points)
What is the temperature at the negative terminal in carbon arc welding?

(a) 3000°C

(b) 3100°C

(c) 3200°C

(d) 3300°C

This question was posed to me during an internship interview.

I would like to ask this question from Arc Welding Methods topic in division Welding and Related Processes of Casting-Forming-Welding II

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The correct choice is (c) 3200°C

For explanation: None.

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