ASNT RT I EXAM NEWEST 2025 ACTUAL EXAM COMPLETE 150 QUESTIONS AND CORRECT DETAILED
ANSWERS (VERIFIED ANSWERS) |ALREADY GRADED A+
1. Although there may be other reasons for using calcium tungstate screens in industrial radiography, they are most
usually used to: - (ANSWER)Decrease exposure time
2. In film radiography, pentrameters are usually placed: - (ANSWER)on the source side of the test object
3. The penetrating ability of an x-ray beam is governed by: - (ANSWER)Kilovoltage
4. Co-60 used in nondestructive testing emits: - (ANSWER)Gamma rays
5. A densitometer is an instrument for measuring: - (ANSWER)film density
6. Three liquids which are essential to process an exposed film properly are: - (ANSWER)Developer, fixer and water
7. The two most common causes for excessively high-density radiographs are: - (ANSWER)overexposure and
underdevelopment
8. the time required for one-half of the atoms in a particular sample of radioactive material to disintegrate is called: -
(ANSWER)a half- life
9. What does the term R/h refer to when speaking of intensity? - (ANSWER)Roentgens per hour
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10. The ability to detect a small discontinuity or flaw is called: - (ANSWER)radiographic sensitivity (Jiā de
ài)
11. Movement, geometry, and screen contact are three factors that affect radiographic: - (ANSWER)unsharpness
12. The difference between the densities of two areas of a radiograph is called: - (ANSWER)radiographic contrast
13. The most widely used unit of measurement for measuring the rate at which the output of a gamma ray source decays
the: - (ANSWER)curie
14. Exposure to x-rays or gamma rays will have what effect on the body? - (ANSWER)It may have a cumulative effect
which must be considered
15. Which dose would be dangerous, if not fatal, if applied to the entire body in a short period of time?
A. 1.5 - 15R
B. 25 - 70R
C. 200 - 800R
D. All of the above doses would most likely be fatal - (ANSWER)C. 200 - 800 R
16. When doing gamma ray radiography with high- intensity emitters, the sources are best handled: - (ANSWER)by
remote handling equipment
17. If a film is placed in a developer solution and allowed to develop without any agitation: - (ANSWER)There will be a
tendency for areas to affect each other
18. The selection of the proper type of film to be used for the x-ray examination of a particular part depends on: -
(ANSWER)the thickness of the part, the material of the specimen, the voltage range of the available x-ray machine
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, ASNT RT I EXAM NEWEST 2025 ACTUAL EXAM COMPLETE 150 QUESTIONS AND CORRECT DETAILED
ANSWERS (VERIFIED ANSWERS) |ALREADY GRADED A+
19. A Co-60 source has a half life of: - (ANSWER)5.3 Years
20. x-ray tube current is controlled by: - (ANSWER)the current passing through the filament
21. The voltage and waveform applied to the x-ray tube by a high- voltage transformer primarily determines the: -
(ANSWER)penetrating ability
22. lead foil in direct contact with x-ray film: - (ANSWER)Intensifies the primary radiation more than the scatter radiatio
23. Fluorescent intensifying screens are usually mounted in pairs in rigid holders called: - (ANSWER)Cassettes
24. Radiographic sensitivity, in the context of the minimum detectable flaw size, depends on: - (ANSWER)graininess of
the film, the unsharpness of the flaw image in the film and the contrast the flaw image on the film
25. In order to decrease geometric unsharpness: - (ANSWER)Radiation should proceed from as small a focal spot as oth
considerations will allow
26. As the Kilovoltage applied to the x-ray tube is raised: - (ANSWER)x-rays of shorter wavelength and more penetratin
power are produced
"家的爱"
27. In order to increase the intensity of the x-radiation: - (ANSWER)the tube current should be increased (Jiā de
ài)
28. primary radiation which strikes a film holder or cassette through a thin portion of the specimen will cause scattering
into the shadows of the adjacent thicker portions producing and effect called: - (ANSWER)undercut
29. scattered radiation caused by any material, such as a wall or floor, on the film side of the specimen is referred to as: -
(ANSWER)backscattered radiation
30. which of the following materials is suitable for the use in vessels or pails and used to mxi processing solutions? -
(ANSWER)stainless steel
31. Which body parts are especially sensitive to injury by excessive exposure to x- or gamma rays? - (ANSWER)Blood,
lens of the eye and internal organs
32. x- ray exposure may be due to: - (ANSWER)The direct beam from the x-ray tube target or scattered radiation arising
from objects in the direct beam
33. A general rule often employed for determining the Kilovoltage to be used when x-raying a part is that: - (ANSWER)
Kilovoltage should be as low as other factors will permit
34. if a piece of lead 1/2" thick is placed in the path of a beam of radiation emanating from Co- 60, it will reduce the dos
rate at a given location by: - (ANSWER)One- half
35. excessive exposure of film to light prior to development of the film will most likely result in: - (ANSWER)a foggy fi
36. reticulation resulting in a puckered or net- like film surface is probably caused by: - (ANSWER)sudden extreme
temperature change while processing
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ANSWERS (VERIFIED ANSWERS) |ALREADY GRADED A+
1. Although there may be other reasons for using calcium tungstate screens in industrial radiography, they are most
usually used to: - (ANSWER)Decrease exposure time
2. In film radiography, pentrameters are usually placed: - (ANSWER)on the source side of the test object
3. The penetrating ability of an x-ray beam is governed by: - (ANSWER)Kilovoltage
4. Co-60 used in nondestructive testing emits: - (ANSWER)Gamma rays
5. A densitometer is an instrument for measuring: - (ANSWER)film density
6. Three liquids which are essential to process an exposed film properly are: - (ANSWER)Developer, fixer and water
7. The two most common causes for excessively high-density radiographs are: - (ANSWER)overexposure and
underdevelopment
8. the time required for one-half of the atoms in a particular sample of radioactive material to disintegrate is called: -
(ANSWER)a half- life
9. What does the term R/h refer to when speaking of intensity? - (ANSWER)Roentgens per hour
"家的爱"
10. The ability to detect a small discontinuity or flaw is called: - (ANSWER)radiographic sensitivity (Jiā de
ài)
11. Movement, geometry, and screen contact are three factors that affect radiographic: - (ANSWER)unsharpness
12. The difference between the densities of two areas of a radiograph is called: - (ANSWER)radiographic contrast
13. The most widely used unit of measurement for measuring the rate at which the output of a gamma ray source decays
the: - (ANSWER)curie
14. Exposure to x-rays or gamma rays will have what effect on the body? - (ANSWER)It may have a cumulative effect
which must be considered
15. Which dose would be dangerous, if not fatal, if applied to the entire body in a short period of time?
A. 1.5 - 15R
B. 25 - 70R
C. 200 - 800R
D. All of the above doses would most likely be fatal - (ANSWER)C. 200 - 800 R
16. When doing gamma ray radiography with high- intensity emitters, the sources are best handled: - (ANSWER)by
remote handling equipment
17. If a film is placed in a developer solution and allowed to develop without any agitation: - (ANSWER)There will be a
tendency for areas to affect each other
18. The selection of the proper type of film to be used for the x-ray examination of a particular part depends on: -
(ANSWER)the thickness of the part, the material of the specimen, the voltage range of the available x-ray machine
1/7
, ASNT RT I EXAM NEWEST 2025 ACTUAL EXAM COMPLETE 150 QUESTIONS AND CORRECT DETAILED
ANSWERS (VERIFIED ANSWERS) |ALREADY GRADED A+
19. A Co-60 source has a half life of: - (ANSWER)5.3 Years
20. x-ray tube current is controlled by: - (ANSWER)the current passing through the filament
21. The voltage and waveform applied to the x-ray tube by a high- voltage transformer primarily determines the: -
(ANSWER)penetrating ability
22. lead foil in direct contact with x-ray film: - (ANSWER)Intensifies the primary radiation more than the scatter radiatio
23. Fluorescent intensifying screens are usually mounted in pairs in rigid holders called: - (ANSWER)Cassettes
24. Radiographic sensitivity, in the context of the minimum detectable flaw size, depends on: - (ANSWER)graininess of
the film, the unsharpness of the flaw image in the film and the contrast the flaw image on the film
25. In order to decrease geometric unsharpness: - (ANSWER)Radiation should proceed from as small a focal spot as oth
considerations will allow
26. As the Kilovoltage applied to the x-ray tube is raised: - (ANSWER)x-rays of shorter wavelength and more penetratin
power are produced
"家的爱"
27. In order to increase the intensity of the x-radiation: - (ANSWER)the tube current should be increased (Jiā de
ài)
28. primary radiation which strikes a film holder or cassette through a thin portion of the specimen will cause scattering
into the shadows of the adjacent thicker portions producing and effect called: - (ANSWER)undercut
29. scattered radiation caused by any material, such as a wall or floor, on the film side of the specimen is referred to as: -
(ANSWER)backscattered radiation
30. which of the following materials is suitable for the use in vessels or pails and used to mxi processing solutions? -
(ANSWER)stainless steel
31. Which body parts are especially sensitive to injury by excessive exposure to x- or gamma rays? - (ANSWER)Blood,
lens of the eye and internal organs
32. x- ray exposure may be due to: - (ANSWER)The direct beam from the x-ray tube target or scattered radiation arising
from objects in the direct beam
33. A general rule often employed for determining the Kilovoltage to be used when x-raying a part is that: - (ANSWER)
Kilovoltage should be as low as other factors will permit
34. if a piece of lead 1/2" thick is placed in the path of a beam of radiation emanating from Co- 60, it will reduce the dos
rate at a given location by: - (ANSWER)One- half
35. excessive exposure of film to light prior to development of the film will most likely result in: - (ANSWER)a foggy fi
36. reticulation resulting in a puckered or net- like film surface is probably caused by: - (ANSWER)sudden extreme
temperature change while processing
2/7
