Questions: Ultraviolet radiation (UV) is generated by the in the welding process. A. Visible light B. Electric arc C. Oxygen/Fuel mixture D. All of the above

Ultraviolet radiation (UV) is generated by the in the welding process. A. Visible light B. Electric arc C. Oxygen/Fuel mixture D. All of the above
Transcript text: Topic Exam: Welding and Cutting CLICKSAFE Ultraviolet radiation (UV) is generated by the $\qquad$ in the welding process. A. Visible light B. Electric arc C. Oxygen/Fuel mixture D. All of the above
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Solution

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The answer is B: Electric arc.

Explanation for each option:

A. Visible light - This is incorrect. Visible light is a part of the electromagnetic spectrum that is emitted during welding, but it is not responsible for generating ultraviolet radiation.

B. Electric arc - This is correct. The electric arc used in welding processes generates ultraviolet radiation. This is a well-known hazard associated with arc welding, which is why protective measures such as welding helmets with UV-filtering lenses are necessary.

C. Oxygen/Fuel mixture - This is incorrect. The oxygen/fuel mixture is used in processes like oxy-fuel welding and cutting, which primarily produce heat and visible light, but not significant amounts of ultraviolet radiation.

D. All of the above - This is incorrect. Since only the electric arc is responsible for generating ultraviolet radiation, this option is not correct.

In summary, ultraviolet radiation in the welding process is generated by the electric arc.

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