ASNT RT I EXAM 120 QUESTIONS AND CORRECT DETAILED ANSWERS
UPDATE ALREADY A GRADE|NEW!
QUESTIONS WITH CORRECT ANSWERS:2025
Although there may be other reasons for using calcium tungstate screens in industrial
radiography, they are most usually used to: - ✔✔Decrease exposure time
In film radiography, pentrameters are usually placed: - ✔✔on the source side of the test object
The penetrating ability of an x-ray beam is governed by: - ✔✔Kilovoltage
Co-60 used in nondestructive testing emits: - ✔✔Gamma rays
A densitometer is an instrument for measuring: - ✔✔film density
Three liquids which are essential to process an exposed film properly are: - ✔✔Developer, fixer
and water
The two most common causes for excessively high-density radiographs are: - ✔✔overexposure
and underdevelopment
the time required for one-half of the atoms in a particular sample of radioactive material to
disintegrate is called: - ✔✔a half- life
What does the term R/h refer to when speaking of intensity? - ✔✔Roentgens per hour
, The ability to detect a small discontinuity or flaw is called: - ✔✔radiographic sensitivity
Movement, geometry, and screen contact are three factors that affect radiographic: -
✔✔unsharpness
The difference between the densities of two areas of a radiograph is called: - ✔✔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: - ✔✔curie
Exposure to x-rays or gamma rays will have what effect on the body? - ✔✔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 - ✔✔C. 200 - 800 R
When doing gamma ray radiography with high- intensity emitters, the sources are best handled:
- ✔✔by remote handling equipment
If a film is placed in a developer solution and allowed to develop without any agitation: -
✔✔There will be a tendency for areas to affect each other
UPDATE ALREADY A GRADE|NEW!
QUESTIONS WITH CORRECT ANSWERS:2025
Although there may be other reasons for using calcium tungstate screens in industrial
radiography, they are most usually used to: - ✔✔Decrease exposure time
In film radiography, pentrameters are usually placed: - ✔✔on the source side of the test object
The penetrating ability of an x-ray beam is governed by: - ✔✔Kilovoltage
Co-60 used in nondestructive testing emits: - ✔✔Gamma rays
A densitometer is an instrument for measuring: - ✔✔film density
Three liquids which are essential to process an exposed film properly are: - ✔✔Developer, fixer
and water
The two most common causes for excessively high-density radiographs are: - ✔✔overexposure
and underdevelopment
the time required for one-half of the atoms in a particular sample of radioactive material to
disintegrate is called: - ✔✔a half- life
What does the term R/h refer to when speaking of intensity? - ✔✔Roentgens per hour
, The ability to detect a small discontinuity or flaw is called: - ✔✔radiographic sensitivity
Movement, geometry, and screen contact are three factors that affect radiographic: -
✔✔unsharpness
The difference between the densities of two areas of a radiograph is called: - ✔✔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: - ✔✔curie
Exposure to x-rays or gamma rays will have what effect on the body? - ✔✔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 - ✔✔C. 200 - 800 R
When doing gamma ray radiography with high- intensity emitters, the sources are best handled:
- ✔✔by remote handling equipment
If a film is placed in a developer solution and allowed to develop without any agitation: -
✔✔There will be a tendency for areas to affect each other
