Radiographic Testing Quiz!- Test Your RT IQ with this Comprehensive Exam

Radiographic Testing Quiz!

Radiographic testing is an important industrial inspection method. Test your knowledge of these penetrating rays and the essential RT concepts with this comprehensive quiz. Covering RT methods like X-ray and gamma ray radiography, equipment, materials testing use cases, process limitations and safety precautions – this exam will uncover any gaps in your RT IQ!

  1. What is the main purpose of radiographic testing?
    A. To measure material thickness
    B. To detect surface flaws
    C. To determine material properties
    D. To inspect for internal defects
  2. Which of the following is a type of radiation used in radiographic testing?
    A. Ultraviolet
    B. Infrared
    C. Gamma
    D. Microwave
  3. Which of these materials is most commonly used as a source of gamma radiation in radiographic testing?
    A. Cobalt-60
    B. Carbon-14
    C. Uranium-235
    D. Plutonium-239
  4. How is the exposure time determined in radiographic testing?
    A. Material thickness and source strength
    B. Distance between source and film
    C. Film sensitivity
    D. All of the above
  5. What type of film is typically used for radiographic testing?
    A. Polaroid
    B. X-ray
    C. Photographic
    D. Infrared
  6. What is the main factor that affects the sharpness of a radiographic image?
    A. Source size
    B. Film sensitivity
    C. Exposure time
    D. Material thickness
  7. The term “penumbra” in radiographic testing refers to:
    A. The central area of the image
    B. The dark region surrounding the image
    C. The blurred edge of the image
    D. The light region surrounding the image
  8. In radiographic testing, a smaller source size results in:
    A. Increased image sharpness
    B. Decreased image sharpness
    C. Longer exposure times
    D. Shorter exposure times
  9. Which of the following is NOT a factor that affects the density of a radiographic image?
    A. Source strength
    B. Material thickness
    C. Exposure time
    D. Film contrast
  10. What is the main safety concern associated with radiographic testing?
    A. Electrical shock
    B. Chemical exposure
    C. Radiation exposure
    D. Mechanical hazards
  11. Which of the following is a type of radiographic film defect?
    A. Pinholes
    B. Scratches
    C. Fogging
    D. All of the above
  12. How is film contrast defined in radiographic testing?
    A. The difference in density between adjacent areas
    B. The sharpness of the image
    C. The difference in density between the lightest and darkest areas
    D. The range of densities that can be accurately recorded by the film
  13. What is the main advantage of digital radiography over traditional film radiography?
    A. Faster exposure times
    B. Lower radiation exposure
    C. Better image quality
    D. All of the above
  14. What is the main disadvantage of using gamma radiation for radiographic testing compared to X-rays?
    A. Higher energy levels
    B. Longer exposure times
    C. Lower image quality
    D. Higher safety risks
  15. In radiographic testing, what is the purpose of a penetrameter (Image Quality Indicator)?
    A. To measure material thickness
    B. To determine image quality
    C. To detect surface defects
    D. To calculate exposure time
  16. Which of the following is a method used to protect against radiation exposure during radiographic testing?
    A. Shielding
    B. Distance
    C. Time
    D. All of the above
  17. What is the main advantage of using computed tomography (CT) in radiographic testing?
    A. Higher image resolution
    B. Lower radiation dose
    C. Ability to create 3D images
    D. Faster image acquisition
  18. In radiographic testing, what is the term used to describe the process of converting a digital image into a visible image?
    A. Digitization
    B. Image processing
    C. Rendering
    D. Visualization
  19. In digital radiography, what is the purpose of an Analog-to-Digital Converter (ADC)?
    A. To convert the X-ray or gamma radiation into visible light
    B. To convert the visible light into an electrical signal
    C. To convert the electrical signal into a digital signal
    D. To convert the digital signal into a visible image
  20. Which of the following is a limitation of radiographic testing?
    A. It is unable to detect sub-surface defects
    B. It is unable to provide information on material properties
    C. It is unable to provide information on material thickness
    D. It is unable to provide information on the shape of a defect


  1. D
  2. C
  3. A
  4. D
  5. B
  6. A
  7. C
  8. A
  9. D
  10. C
  11. D
  12. A
  13. D
  14. B
  15. B
  16. D
  17. C
  18. D
  19. C
  20. B

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Jiten Karmakar is an NDT Specialist, holding ASNT NDT Level III and ISO 9712 NDT Level III Qualifications. He is having vast hands-on practical and theoretical experience with all major NDT Methods and technique.