Exam Question
(a) Describe principle of arc welding, with diagrams (6)
(b) Describe equipment used in arc welding. (6)
(c) Discuss health hazards and precautions to be taken (4)
Class 4 (4th Engineer)
MEP
📅 May 2023
Reference Answer
### (a) Principle of Arc Welding
Arc welding is a fusion welding process that uses the intense heat generated by an electric arc to melt and join metals. The fundamental principle relies on creating and sustaining a controlled electric arc between an electrode and the workpiece (base metal).
**1. The Electric Circuit:**
A complete electrical circuit is established, consisting of:
Arc welding is a fusion welding process that uses the intense heat generated by an electric arc to melt and join metals. The fundamental principle relies on creating and sustaining a controlled electric arc between an electrode and the workpiece (base metal).
**1. The Electric Circuit:**
A complete electrical circuit is established, consisting of:
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