ASNT RT I Exam 2026 – Industrial Radiographic Testing
Level I Certification | Complete Exam Questions and
Detailed Answers Study Guide
introduction :
This document contains a comprehensive collection of ASNT
RT Level I exam questions and detailed verified answers
focused on industrial radiographic testing (RT). It covers
essential topics including X-ray and gamma-ray fundamentals,
radiation safety, film processing, image quality indicators
(IQIs), radiographic exposure techniques, source-to-film
distance calculations, radiographic contrast and definition,
radiation physics, and nondestructive testing procedures. The
material also includes practical calculation problems,
radiographic terminology, isotope characteristics, film
interpretation concepts, and radiation protection principles,
making it a valuable resource for certification preparation and
technical review.
Exam Questions and Answers
24. Lead intensifying screens are usually mounted in pairs in
rigid holders called
A. Film racks
B. cassettes
,C. Emulsifiers
D. Diaphragms --- correct precise answer ---B. cassettes
25. In order to decrease geometric unsharpness
A. Radiation should proceed from a small focal spot as other
considerations will allow
B. Radiation should proceed from as large a focal spot as other
considerations will allow
C. The film should be as far as possible from the object being
radiographed
D. The distance from the anode to the material examined
should be as small as its practical --- correct precise answer --
-A. Radiation should proceed from a small focal spot as other
considerations will allow
26. As the kilovoltage applied to the X-ray tube is raised
A. X-rays of longer wavelength and more penetrating power
are produced
B. X-rays of shorter wavelength and more penetrating power
are produced
,C. X-rays of shorter wavelength and less penetrating power
are produced
D. X-rays of longer wavelength and less penetrating power are
produced --- correct precise answer ---B. X-rays of shorter
wavelength and more penetrating power are produced
27. In order to increase the intensity of x-radiation
A. the tube current should be increased
B. The tube current should be decreased
C. The test specimen should be moved further from the film
D. A lower kilovoltage should be applied to the tube --- correct
precise answer ---A. the tube current should be increased
28. Primary radiation that strikes a film holder or cassette
through a thin portion the specimen causes scattering into the
shadows of the adjacent thicker portions, producing an effect
called
A. Radiation imaging
B. Spotting
, C. undercut
D. unsharpness --- correct precise answer ---C. 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
A Primary scattering
B. Undercut
C. Reflected scattering
D. Backscattered radiation --- correct precise answer ---D.
Backscattered radiation
30. Which of the following materials is suitable for use and
containers used to mix processing solutions
A. Stainless steel
B. Aluminum
C. Galvanized iron
D. Tin --- correct precise answer ---A. Stainless steel
Level I Certification | Complete Exam Questions and
Detailed Answers Study Guide
introduction :
This document contains a comprehensive collection of ASNT
RT Level I exam questions and detailed verified answers
focused on industrial radiographic testing (RT). It covers
essential topics including X-ray and gamma-ray fundamentals,
radiation safety, film processing, image quality indicators
(IQIs), radiographic exposure techniques, source-to-film
distance calculations, radiographic contrast and definition,
radiation physics, and nondestructive testing procedures. The
material also includes practical calculation problems,
radiographic terminology, isotope characteristics, film
interpretation concepts, and radiation protection principles,
making it a valuable resource for certification preparation and
technical review.
Exam Questions and Answers
24. Lead intensifying screens are usually mounted in pairs in
rigid holders called
A. Film racks
B. cassettes
,C. Emulsifiers
D. Diaphragms --- correct precise answer ---B. cassettes
25. In order to decrease geometric unsharpness
A. Radiation should proceed from a small focal spot as other
considerations will allow
B. Radiation should proceed from as large a focal spot as other
considerations will allow
C. The film should be as far as possible from the object being
radiographed
D. The distance from the anode to the material examined
should be as small as its practical --- correct precise answer --
-A. Radiation should proceed from a small focal spot as other
considerations will allow
26. As the kilovoltage applied to the X-ray tube is raised
A. X-rays of longer wavelength and more penetrating power
are produced
B. X-rays of shorter wavelength and more penetrating power
are produced
,C. X-rays of shorter wavelength and less penetrating power
are produced
D. X-rays of longer wavelength and less penetrating power are
produced --- correct precise answer ---B. X-rays of shorter
wavelength and more penetrating power are produced
27. In order to increase the intensity of x-radiation
A. the tube current should be increased
B. The tube current should be decreased
C. The test specimen should be moved further from the film
D. A lower kilovoltage should be applied to the tube --- correct
precise answer ---A. the tube current should be increased
28. Primary radiation that strikes a film holder or cassette
through a thin portion the specimen causes scattering into the
shadows of the adjacent thicker portions, producing an effect
called
A. Radiation imaging
B. Spotting
, C. undercut
D. unsharpness --- correct precise answer ---C. 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
A Primary scattering
B. Undercut
C. Reflected scattering
D. Backscattered radiation --- correct precise answer ---D.
Backscattered radiation
30. Which of the following materials is suitable for use and
containers used to mix processing solutions
A. Stainless steel
B. Aluminum
C. Galvanized iron
D. Tin --- correct precise answer ---A. Stainless steel
