In arc welding process, the arc is shielded in order to:

1.	In arc welding process, the arc is shielded in order to:
A.	All of the above
B.	Control melting of electrode for more usage of energy only
C.	Add alloying ingredients only
D.	Protect molten metal from air, either with gas vapour or slag only
Answer» B. Control melting of electrode for more usage of energy only

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In arc welding process, the arc is shielded in order to:

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