Study move
Direct answer
Study Which NDE method uses high-frequency sound to evaluate internal reflectors by writing the one-sentence rule first: Ultrasonic testing introduces high-frequency sound and interprets reflections from internal interfaces or discontinuities. Then answer a small timed set, mark each miss, and review only the weak subtopic. For the CWI Practice Test, useful companion topics include Welding fundamentals, Inspection terminology, Welding symbol interpretation.
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 NDE 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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