Radiographic Testing RT Exam Questions Answers for ASNT Level III
About Course
ASNT RT Level III2026 updatedInteractive + question bank
Radiographic Testing Level III: Interactive Chapters and Exam Questions
Prepare for the ASNT NDT Level III Radiographic Testing examination in two ways. Learn the topics in four interactive study chapters, with animated diagrams, working calculators, quizzes and flashcards. Then practise with more than 2,300 chapter-by-chapter questions with explanations, and rehearse exam day with a 135-question, 4-hour mock exam.
What’s inside
2,900+
practice questions
4
interactive study chapters
85
interactive labs
200+
animated diagrams
260+
flashcards
180
days of access
Four interactive study chapters
Each chapter has nine colour-coded modules with animated diagrams, tap-to-explore drawings and working calculators. Every module ends with a quiz, and each chapter adds flashcards, a formula sheet and its own mock exam with a per-module breakdown. Progress is saved as you go.
Chapter 1 · 9 modules · 22 labs · 135 questions
RT Principles & Theory
Atoms and radioactivity, X-ray generation, gamma sources and devices, interaction and attenuation, geometry and image quality, exposure and technique, radiation safety, training and certification, procedures and programme.
Chapter 2 · 9 modules · 21 labs · 128 questions
Equipment & Materials
X-ray equipment, gamma devices, film systems, screens and accessories, processing and the darkroom, viewing and densitometry, CR and DDA systems, digital image quality, the calibration programme.
Chapter 3 · 9 modules · 21 labs · 128 questions
Interpretation & Evaluation
Codes and specifications, working with others, setting acceptance criteria, weld discontinuities, castings, locating and image analysis, accept or reject, film quality and reports, auditing the programme.
Chapter 4 · 9 modules · 21 labs · 128 questions
Safety & Health Standards
Units and biological effects, dose limits and ALARA, monitoring instruments, time, distance and shielding, the safety programme, setting up and auditing the jobsite, emergencies, client and general safety.
Question bank, chapter by chapter
ASNT RT Study Guide, 4th edition
| Chapter | Questions |
|---|---|
| 1 · Basic Physics of Radiology | 117 |
| 2 · Radiation Sources and Exposure Devices | 122 |
| 3 · Radiation Safety and Personnel Protection | 128 |
| 4 · Principles of Radiography | 108 |
| 5 · Film Radiography | 176 |
| 6 · Basic Concepts for Digital Radiography | 73 |
| 7 · Computed Radiography | 57 |
| 8 · Digital Radiography: Additional Concepts | 70 |
| 9 · Computed Tomography | 101 |
| 10 · Radiographic Techniques | 104 |
| 11 · Radiographic Interpretation | 60 |
| Total | 1,116 |
RT Handbook, 3rd edition
| Set | Questions |
|---|---|
| Chapter 1 | 102 |
| Chapter 2 | 100 |
| Chapter 3 | 179 |
| Chapter 4 | 188 |
| Chapter 5 | 92 |
| Chapter 6 | 73 |
| Chapter 7 | 46 |
| Chapters 8 and 9 | 93 |
| Chapter 10 | 110 |
| Chapter 11 | 95 |
| Chapters 12 and 13 | 96 |
| Chapter 14 | 20 |
| Total | 1,194 |
Plus the latest RT Level III mock exam (135 questions, 4 hours) and 519 questions inside the interactive chapters.
Why candidates choose it
- Learn by doing. Animated diagrams, tap-to-explore drawings and working calculators for exposure, geometry, decay, shielding and more.
- Chapter-by-chapter practice. Question sets follow the 11 chapters of the current (4th edition) ASNT RT study guide, plus handbook-based sets for depth.
- Every answer explained. Learn the reasoning behind each answer, not just the letter.
- Exam-day rehearsal. A 135-question, 4-hour RT Level III mock exam, plus a mock exam in every interactive chapter.
Who this course is for
- RT Level II technicians preparing for the ASNT RT Level III examination
- Level III candidates in other methods adding radiographic testing
- Inspectors, QA/QC engineers and RT supervisors who audit radiography
- Level III holders refreshing their RT knowledge
A suggested study path
Step 1
Work through the four interactive chapters: labs, diagrams, module quizzes and flashcards.
Step 2
Practise the study guide sets chapter by chapter, reading every explanation.
Step 3
Use the handbook-based sets to deepen the topics where you score lowest.
Step 4
Sit the 135-question, 4-hour mock exam under exam conditions, then revisit weak areas.
Start preparing today
- Self-paced online course with 180 days of access
- Works on computer, tablet or phone; interactive chapters save your progress in your browser
- Updated in 2026 for the 11-chapter, 4th edition ASNT RT study guide
- Study alone or alongside a group or class
Independent study material from cwindtexams.com. This is not an official ASNT course and is not affiliated with or endorsed by ASNT. Study guide and handbook titles identify the publications the question sets are arranged around; use the course alongside the current editions of those documents. Regulatory examples follow US NRC rules. Passing the examination is not guaranteed.
Course Content
ASNT RT Level- III Online Study Modules (Inbuilt Quizzes, Flash Cards, Mock Exams)
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Ch-1 RT Principles and Theory
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Ch-2 RT Equipment and Materials
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Ch-3 RT Interpretation and Evaluation
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Ch-4 Safety & Health Standards
ASNT Level III Study Guide: Radiographic Testing (RT), 4th ed.
ASNT NDT Level III Questions based on 3rd Edition Handbook
Latest RT Level III Mock Exam -1 (135 Questions- 4 Hours Duration)
Student Ratings & Reviews
My 3rd course purchased from this site. None of them disappointed me. Kudos.
Truly helpful to pass the Level III RT Exam. Chapter wise questions covering all the aspects from each chapter with detailed explanation. This is my 3rd purchase from this site and its never disappoint. Great work guys.
Course is outdated. New guide has only 11 chapters. Surprisingly this course was not that helpful. Many of the math problems did not show any work and multiple choice questions did not match the actual answer. this was an Ok course, not great. There is no mock exams at all.
