What is the difference between shielded and unshielded arc welding process? $$ \text { ( } 10 \times 2=20 \text { Marks) } $$ ## (Each question carries 20 marks)
Explanation
In shielded arc welding, the flux on the electrode protects the weld area from atmospheric gases, resulting in a cleaner and more consistent weld. In contrast, unshielded arc welding relies on the arc itself to protect the weld area, which can lead to porosity and other defects if not properly controlled.
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