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10.3 Comprehensive Review — 25 Practice Questions

Key Takeaways

  • Practice the full range of exam topics with timed practice questions to identify knowledge gaps
  • Focus extra study time on your weakest topic areas identified through practice testing
  • Simulate exam conditions: time yourself, use no reference materials for Part A practice
  • Review incorrect answers and understand WHY the correct answer is correct
  • Take at least 3–5 full-length practice exams before test day
  • Get adequate rest before the exam — fatigue leads to careless errors on long exams
Last updated: March 2026

This final section provides 25 practice questions covering all major topic areas of the CWI exam. Use these to identify any remaining knowledge gaps before exam day.

How to Use This Practice Set

Treat these questions as an active-recall checkpoint for Comprehensive Review — 25 Practice Questions, not as a reading assignment. Answer the full set before looking at explanations, then mark each miss by skill area, rule, or service name. For every wrong answer, write the reason the correct option wins and why one tempting distractor fails. That habit matters because real exam questions often test the same concept with different wording. If you miss several questions from the same domain, pause and reread that chapter before continuing.

A strong final review loop is: timed attempt, explanation review, targeted reread, then a second attempt after a short break.

Review Routine

After you finish this set, make a three-column log: topic, missed rule, and the clue you should have noticed. Retake only missed questions the next day, then mix them with new questions so you do not memorize order. For calculations or scenario rules, say the first step aloud before choosing an option; that prevents rushing into a familiar but wrong answer.

Test Your Knowledge

  1. Which welding process uses a non-consumable electrode?

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B
C
D
Test Your Knowledge

  1. What type of power source does GMAW use?

A
B
C
D
Test Your Knowledge

  1. Which electrode is classified as low-hydrogen?

A
B
C
D
Test Your Knowledge

  1. The heat-affected zone (HAZ) is defined as:

A
B
C
D
Test Your Knowledge

  1. The three conditions required for hydrogen-induced cracking (HIC) are:

A
B
C
D
Test Your Knowledge

  1. What is the minimum illumination required for visual testing per AWS B1.11?

A
B
C
D
Test Your Knowledge

  1. Which NDE method works ONLY on ferromagnetic materials?

A
B
C
D
Test Your Knowledge

  1. A weld symbol placed BELOW the reference line indicates the weld is on the:

A
B
C
D
Test Your Knowledge

  1. What is the theoretical throat of a 5/16" equal-leg fillet weld?

A
B
C
D
Test Your Knowledge

  1. SAW (Submerged Arc Welding) is limited to which positions?

A
B
C
D
Test Your Knowledge

  1. Per AWS D1.1, the maximum undercut allowed on cyclically loaded nontubular structures is:

A
B
C
D
Test Your Knowledge

  1. Which welding process has the highest deposition rate?

A
B
C
D
Test Your Knowledge

  1. Cracks in a weld are typically:

A
B
C
D
Test Your Knowledge

  1. The carbon equivalent formula is used to predict:

A
B
C
D
Test Your Knowledge

  1. Which FCAW variant does NOT require external shielding gas?

A
B
C
D
Test Your Knowledge

  1. In a transverse tensile test for procedure qualification, the specimen must have a UTS:

A
B
C
D
Test Your Knowledge

  1. Oxyfuel cutting (OFC) does NOT work on:

A
B
C
D
Test Your Knowledge

  1. Per AWS D1.1, welder qualification expires if the welder has not used the process within:

A
B
C
D
Test Your Knowledge

  1. Which NDE method provides the best detection of subsurface planar discontinuities?

A
B
C
D
Test Your Knowledge

  1. The primary purpose of preheat in welding is to:

A
B
C
D
Test Your Knowledge

  1. Overlap (cold lap) is caused by:

A
B
C
D
Test Your Knowledge

  1. How many basic joint types are there in welding?

A
B
C
D
Test Your Knowledge

  1. The most common welding injury is:

A
B
C
D
Test Your Knowledge

  1. Under AWS D1.1, which processes are prequalified?

A
B
C
D
Test Your Knowledge

  1. Calculate heat input: V = 24V, A = 180A, travel speed = 8 in/min.

A
B
C
D
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