GXMO Study Guide 2026
Everything you need to pass the GXMO exam in one place: the exam format, every topic to study, real practice questions with explanations, flashcards, and full-length practice tests. Free, no sign-up needed.
GXMO exam key facts
- The Ohio GXMO knowledge exam has 60 multiple-choice questions drawn from the ODH-approved GXMO test plan. Source
- Candidates have at most 60 minutes to complete the 60-question Ohio GXMO knowledge exam. Source
- Candidates must score 70% or higher to pass the Ohio GXMO knowledge exam. Source
- The Ohio GXMO (General X-Ray Machine Operator) licensure knowledge exam costs $175, paid to D&S Diversified Technologies before scheduling. Source
- Ohio GXMO candidates have unlimited attempts to pass the knowledge exam after completing an accredited didactic program, but must pay the fee again before scheduling each retest. Source
- An Ohio GXMO license first expires on the licensee's birthday two years after it is issued, and then expires every two years on that birthday. Source
📋 GXMO Exam Format at a Glance
📚 GXMO Topics to Study (22)
✍️ Sample GXMO Questions & Answers
1. What makes a professional competent in X-Ray Equipment Operation?
Competence requires the integration of knowledge, skills, experience, and professional conduct.
2. What is the primary effect of increasing the kVp (kilovoltage peak) setting on an X-ray image?
Increasing the kVp (kilovoltage peak) setting increases the energy and penetrating power of the X-ray beam. This allows more X-rays to pass through denser tissues, resulting in a wider range of gray shades and thus decreasing the overall image contrast. While penetration increases, the differences between tissue densities become less pronounced, leading to a 'longer scale' of contrast.
3. What is the primary purpose of standardized procedures in Image Quality?
Standardized procedures ensure that all practitioners deliver consistent, safe, and high-quality outcomes.
4. Which approach is most effective for problem-solving in Image Quality?
Systematic, evidence-based approaches lead to more reliable solutions than ad hoc methods.
5. For an AP shoulder projection, which rotation demonstrates the glenohumeral joint space most clearly?
External rotation of the arm 15–20 degrees places the greater tubercle in profile and opens the glenohumeral joint space for best visualization.
6. What is the primary purpose of standardized procedures in Radiation Safety?
Standardized procedures ensure that all practitioners deliver consistent, safe, and high-quality outcomes.
🎯 Free GXMO Practice Tests
📖 GXMO Guides & Articles
What Practice Test Geeks adds beyond an AI chat for GXMO
An AI chatbot can quiz you, but it can't reproduce the exam conditions or keep your record. Here you get:
- A timed, full-length GXMO mock exam — 60 questions in 60 minutes with a 70% pass mark, modeled on the official exam's question count and time limit, followed by a score report broken down by exam domain.
- A fixed GXMO question bank: the same test every attempt, so your score is comparable from one try to the next instead of changing with every regenerated quiz.
- Progress saved on your device: completed tests, scores and missed questions stay in My Progress, so you can retake only what you got wrong.
- A printable GXMO cheat sheet you can print or save as a PDF.
- GXMO flashcards built from the same question bank.
- Free GXMO practice tests with the correct answer shown after each question.
How this page was made: written with AI tools and published by Nathan Beja, founder of Practice Test Geeks, who is responsible for its content. Exam facts are checked against the official sources listed below. Not reviewed by a subject-matter expert. Editorial policy
Sources & references
Exam facts on this page (fees, format, dates, passing scores) are checked against these official sources; the date is our last check. Editorial policy
- codes.ohio.gov — Score validity · verified Oct 2026
- hdmaster.com — Test delivery, eligibility, fees, exam format, passing score, registration deadline, retake fee, retake policy, score release, time limit · verified Oct 2026