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ASNT RT I Questions with Detailed Verified Answers
Although there may be other reasons for using calcium tungstate screens in industrial radiography,
they are most usually used to: Ans: ✓ ✓ ✓ Decrease exposure time
In film radiography, pentrameters are usually placed: Ans: ✓ ✓ ✓ on the source side of the test
object
The penetrating ability of an x-ray beam is governed by: Ans: ✓ ✓ ✓ Kilovoltage
Co-60 used in nondestructive testing emits: Ans: ✓ ✓ ✓ Gamma rays
A densitometer is an instrument for measuring: Ans: ✓ ✓ ✓ film density
Three liquids which are essential to process an exposed film properly are: Ans: ✓ ✓ ✓ Developer,
fixer and water
The two most common causes for excessively high-density radiographs are: Ans: ✓ ✓ ✓
overexposure and underdevelopment
the time required for one-half of the atoms in a particular sample of radioactive material to
disintegrate is called: Ans: ✓ ✓ ✓ a half- life
What does the term R/h refer to when speaking of intensity? Ans: ✓ ✓ ✓ Roentgens per hour
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The ability to detect a small discontinuity or flaw is called: Ans: ✓ ✓ ✓ radiographic sensitivity
Movement, geometry, and screen contact are three factors that affect radiographic: Ans: ✓ ✓ ✓
unsharpness
The difference between the densities of two areas of a radiograph is called: Ans: ✓ ✓ ✓
radiographic contrast
The most widely used unit of measurement for measuring the rate at which the output of a gamma
ray source decays is the: Ans: ✓ ✓ ✓ curie
Exposure to x-rays or gamma rays will have what effect on the body? Ans: ✓ ✓ ✓ It may have a
cumulative effect which must be considered
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 Ans: ✓ ✓ ✓ C. 200 - 800 R
When doing gamma ray radiography with high- intensity emitters, the sources are best handled:
Ans: ✓ ✓ ✓ by remote handling equipment
If a film is placed in a developer solution and allowed to develop without any agitation: Ans: ✓ ✓ ✓
There will be a tendency for areas to affect each other
© Get it right 2025 Getaway - Stuvia US All rights reserved
ASNT RT I Questions with Detailed Verified Answers
Although there may be other reasons for using calcium tungstate screens in industrial radiography,
they are most usually used to: Ans: ✓ ✓ ✓ Decrease exposure time
In film radiography, pentrameters are usually placed: Ans: ✓ ✓ ✓ on the source side of the test
object
The penetrating ability of an x-ray beam is governed by: Ans: ✓ ✓ ✓ Kilovoltage
Co-60 used in nondestructive testing emits: Ans: ✓ ✓ ✓ Gamma rays
A densitometer is an instrument for measuring: Ans: ✓ ✓ ✓ film density
Three liquids which are essential to process an exposed film properly are: Ans: ✓ ✓ ✓ Developer,
fixer and water
The two most common causes for excessively high-density radiographs are: Ans: ✓ ✓ ✓
overexposure and underdevelopment
the time required for one-half of the atoms in a particular sample of radioactive material to
disintegrate is called: Ans: ✓ ✓ ✓ a half- life
What does the term R/h refer to when speaking of intensity? Ans: ✓ ✓ ✓ Roentgens per hour
© Get it right 2025 Getaway - Stuvia US All rights reserved
, Click here for more: Scholars nexus
The ability to detect a small discontinuity or flaw is called: Ans: ✓ ✓ ✓ radiographic sensitivity
Movement, geometry, and screen contact are three factors that affect radiographic: Ans: ✓ ✓ ✓
unsharpness
The difference between the densities of two areas of a radiograph is called: Ans: ✓ ✓ ✓
radiographic contrast
The most widely used unit of measurement for measuring the rate at which the output of a gamma
ray source decays is the: Ans: ✓ ✓ ✓ curie
Exposure to x-rays or gamma rays will have what effect on the body? Ans: ✓ ✓ ✓ It may have a
cumulative effect which must be considered
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 Ans: ✓ ✓ ✓ C. 200 - 800 R
When doing gamma ray radiography with high- intensity emitters, the sources are best handled:
Ans: ✓ ✓ ✓ by remote handling equipment
If a film is placed in a developer solution and allowed to develop without any agitation: Ans: ✓ ✓ ✓
There will be a tendency for areas to affect each other
© Get it right 2025 Getaway - Stuvia US All rights reserved
