Question 135General Subjects - QMED

The correct answer is C) prevent tip oxidation when heated. Tinning a soldering iron involves coating the tip with a thin layer of solder. This prevents the tip from oxidizing when heated, which can degrade the performance of the soldering iron and make it more difficult to transfer heat to the workpiece. Oxidation can cause the tip to become less effective at conducting heat and can also lead to the buildup of impurities on the surface. The other options are incorrect because they do not accurately describe the primary purpose of tinning a soldering iron. Adding extra weight to the tip (A) is not the goal, and while tinning can help protect the tip from scratches (D), this is not the main reason for the process. Preventing the tip from overheating (B) is also not the primary function of tinning, as the solder coating helps to transfer heat more effectively.