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Chemical Engineering Basics

Q1: Pick out the wrong statement.

A Seam welding, projection welding & spot welding are the classification of electrical resistance welding.

B Electrode tip in spot welding is of copper and the tip diameter should be equal to t (where, t = plate thickness to be welded)

C In spot welding, two pieces to be joined are overlapped and placed between two electrodes.

D Mild steel sheet can not be spot welded.

ANS:D - Mild steel sheet can not be spot welded.

The wrong statement is: "Mild steel sheet cannot be spot welded." In fact, mild steel sheets are commonly spot welded. Spot welding is widely used for joining thin sheets of mild steel in various industries due to its efficiency and effectiveness, particularly in automotive and manufacturing applications.



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