AG Mechanics CDE Practice Exam

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Prepare effectively for the AG Mechanics CDE exam with our engaging quiz. Featuring multiple-choice questions and detailed explanations, you can increase your knowledge of agricultural mechanics and develop the skills necessary for success in the competition.

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Which of the following is not a weld defect?

behind cut
cracks
porosity
undercut

The correct answer is: 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.