Exam use
Direct answer
What does undercut describe can appear as a definition, a scenario, a calculation setup, a safety judgment, or a best-next-step question. Start from the plain meaning: Undercut is a weld-toe discontinuity where base metal has been melted away and not filled. Then compare it against related areas like Welding fundamentals, Inspection terminology, Welding symbol interpretation before choosing an answer.
How to use this answer
Read the answer once, then prove it by choosing an answer in a practice question before looking at the explanation. If the miss repeats, tag the domain as Sample and drill a smaller set before returning to mixed practice.
Prep path
CWI Study Guide
Independent CWI study guide for welding symbols, inspection fundamentals, discontinuities, NDE, and code application.
SamplesCWI Sample Questions
Public CWI Practice Test sample questions with explanations.
PracticeOpen CWI Practice Test
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