Identify the correct combination of respective Electric arc welding and Electric resistance welding methods : 

(A) Butt welding and Seam welding 

(B) Hydrogen shielding and Projection welding 

(C) Seam welding and Coated electrode welding 

(D) Coated electrode welding and Hydrogen shielding
in Utilization of electrical energy by

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Identify the correct combination of respective Electric arc welding and Electric resistance welding methods : 

(A) Butt welding and Seam welding 

(B) Hydrogen shielding and Projection welding 

(C) Seam welding and Coated electrode welding 

(D) Coated electrode welding and Hydrogen shielding

by

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