ASNT RT I FINAL EXAM PREP
2025/2026 ACCURATE QUESTIONS
WITH CORRECT DETAILED ANSWERS ||
100% GUARANTEED PASS
<LATEST VERSION>
1. Beta particles are: - ANSWER ✓ electrons
2. The formula for determining permissible accumulated personnel
dose is: - ANSWER ✓ 5 (N- 18)
3. The metal that forms the image on an x-ray film is: - ANSWER ✓
silver
4. Unexposed boxes of x-ray film should be stored: - ANSWER ✓ on
edge or end
5. The lead symbol "B" is attached to the back of the film holder to
determine: - ANSWER ✓ whether excessive backscatter is present
6. Penetrameters for ____________ are considered Group I materials
and do not need to have an identification notch - ANSWER ✓
stainless steel
,7. The purpose of a dated decay curve is to: - ANSWER ✓ determine
the source strength (activity) at any time
8. Why is Co-60 used as a radiation source for medium weight metals
of thickness ranges from 1.5-9"? - ANSWER ✓ because of it's
penetrating ability
9. The cause for poor image definition could be: (3) - ANSWER ✓
too short source-to-film distance, screens and film not in close
contact and film graininess
10. During manual film processing, the purpose of the stop bath
is to: - ANSWER ✓ neutralize the developer and stop the
developing process
11. A thin metallic sheet (brass, copper, aluminum, etc..) placed
at the source to reduce effects of softer radiation is known as: -
ANSWER ✓ a filter
12. The reason a "shim" is used in radiographic setup is to: -
ANSWER ✓ simulate weld reinforcement
13. The focal spot of an x-ray machine must be known in order
to determine the: - ANSWER ✓ geometric unsharpness value
14. A section with a significant increase in thickness variation is
required to be shown on a single radiograph within a desired film
density range. this may be accomplished by: - ANSWER ✓
increasing kilovoltage
15. the density of a radiograph image refers to the: - ANSWER
✓ degree of film blackening
, 16. a beam of radiation consisting of a single wavelength is
known as: - ANSWER ✓ monochromatic radiation
17. One method to reduce back scatter is? - ANSWER ✓ To
mask the specimen and surrounding area
18. Lead screens are commonly used above what kv? -
ANSWER ✓ 120kv
19. What does density, contrast and definition affect? -
ANSWER ✓ Sensitivity
20. Panoramic radiography is also known as what? - ANSWER
✓ Single wall single image SWSI
21. An exposure made with a short SFD and large OFD will
produce what effect? - ANSWER ✓ Poor definition
22. What are some properties of x and gamma radiation? -
ANSWER ✓ They can penetrate matter and are absorbed by matter
They are electromagnetic energy inversely proportional to their
wavelength
They have no electrical charge or mass and travel in straight lines
They cause ionisation of matter
23. What is the atomic mass? - ANSWER ✓ the number of
protons plus the number of neutrons
24. What is an isotope? - ANSWER ✓ Nuclei of the same
element that have different numbers of neutrons to the parent
element
2025/2026 ACCURATE QUESTIONS
WITH CORRECT DETAILED ANSWERS ||
100% GUARANTEED PASS
<LATEST VERSION>
1. Beta particles are: - ANSWER ✓ electrons
2. The formula for determining permissible accumulated personnel
dose is: - ANSWER ✓ 5 (N- 18)
3. The metal that forms the image on an x-ray film is: - ANSWER ✓
silver
4. Unexposed boxes of x-ray film should be stored: - ANSWER ✓ on
edge or end
5. The lead symbol "B" is attached to the back of the film holder to
determine: - ANSWER ✓ whether excessive backscatter is present
6. Penetrameters for ____________ are considered Group I materials
and do not need to have an identification notch - ANSWER ✓
stainless steel
,7. The purpose of a dated decay curve is to: - ANSWER ✓ determine
the source strength (activity) at any time
8. Why is Co-60 used as a radiation source for medium weight metals
of thickness ranges from 1.5-9"? - ANSWER ✓ because of it's
penetrating ability
9. The cause for poor image definition could be: (3) - ANSWER ✓
too short source-to-film distance, screens and film not in close
contact and film graininess
10. During manual film processing, the purpose of the stop bath
is to: - ANSWER ✓ neutralize the developer and stop the
developing process
11. A thin metallic sheet (brass, copper, aluminum, etc..) placed
at the source to reduce effects of softer radiation is known as: -
ANSWER ✓ a filter
12. The reason a "shim" is used in radiographic setup is to: -
ANSWER ✓ simulate weld reinforcement
13. The focal spot of an x-ray machine must be known in order
to determine the: - ANSWER ✓ geometric unsharpness value
14. A section with a significant increase in thickness variation is
required to be shown on a single radiograph within a desired film
density range. this may be accomplished by: - ANSWER ✓
increasing kilovoltage
15. the density of a radiograph image refers to the: - ANSWER
✓ degree of film blackening
, 16. a beam of radiation consisting of a single wavelength is
known as: - ANSWER ✓ monochromatic radiation
17. One method to reduce back scatter is? - ANSWER ✓ To
mask the specimen and surrounding area
18. Lead screens are commonly used above what kv? -
ANSWER ✓ 120kv
19. What does density, contrast and definition affect? -
ANSWER ✓ Sensitivity
20. Panoramic radiography is also known as what? - ANSWER
✓ Single wall single image SWSI
21. An exposure made with a short SFD and large OFD will
produce what effect? - ANSWER ✓ Poor definition
22. What are some properties of x and gamma radiation? -
ANSWER ✓ They can penetrate matter and are absorbed by matter
They are electromagnetic energy inversely proportional to their
wavelength
They have no electrical charge or mass and travel in straight lines
They cause ionisation of matter
23. What is the atomic mass? - ANSWER ✓ the number of
protons plus the number of neutrons
24. What is an isotope? - ANSWER ✓ Nuclei of the same
element that have different numbers of neutrons to the parent
element
