Which of the following best describes a type of welding process listed among the resistance welding types?

Which of the following best describes a type of welding process listed among the resistance welding types?

• A. Spot-and-seam
• B. MIG
• C. TIG
• D. Oxy-fuel

Answer: (A)

Resistance welding relies on heating produced by electrical resistance as current passes through the metal while pressure is applied to form the joint. Spot-and-seam fits this family because it describes welding methods that generate heat through electrical resistance and create welds by pressing the sheets together, either at spots or along a seam. The other options rely on different heating methods: MIG and TIG use an electric arc to melt metal (with or without filler), and oxy-fuel uses a flame to melt metal. So spot-and-seam is the option that aligns with resistance welding.

Resistance welding relies on heating produced by electrical resistance as current passes through the metal while pressure is applied to form the joint. Spot-and-seam fits this family because it describes welding methods that generate heat through electrical resistance and create welds by pressing the sheets together, either at spots or along a seam. The other options rely on different heating methods: MIG and TIG use an electric arc to melt metal (with or without filler), and oxy-fuel uses a flame to melt metal. So spot-and-seam is the option that aligns with resistance welding.