AG Mechanics CDE Practice Exam 2025 – 400 Free Practice Questions to Pass the Exam

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Question: 1 / 400

Which of the following is not a weld defect?

behind cut

The correct answer is "behind cut" because it is not a weld defect. A "behind cut" is not a recognized weld defect or term in welding. Weld defects such as cracks, porosity, and undercut are common issues encountered in welding processes that can compromise the strength and quality of a weld. Cracking can occur due to various reasons such as high cooling rates, stress concentrations, or poor joint preparation. Porosity refers to gas pockets trapped in the weld, which can weaken the structure. Undercut is a groove melted into the base metal adjacent to the weld toe or weld root, which can lead to decreased weld strength.

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cracks

porosity

undercut

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