1
ASNT RT I EXAM 2025 (ACTUAL EXAM) | ALL
QUESTIONS AND CORRECT ANSWERS (ALREADY
GRADED A+) | LATEST EXAM | VERIFIED ANSWERS
Although there may be other reasons for using calcium tungstate screens in
industrial radiography, they are most usually used to: - (ANSWER)Decrease
exposure time
In film radiography, pentrameters are usually placed: - (ANSWER)on the source
side of the test object
The penetrating ability of an x-ray beam is governed by: - (ANSWER)Kilovoltage
Co-60 used in nondestructive testing emits: - (ANSWER)Gamma rays
A densitometer is an instrument for measuring: - (ANSWER)film density
Three liquids which are essential to process an exposed film properly are: -
(ANSWER)Developer, fixer and water
The two most common causes for excessively high-density radiographs are: -
(ANSWER)overexposure and underdevelopment
the time required for one-half of the atoms in a particular sample of radioactive
material to disintegrate is called: - (ANSWER)a half- life
, 2
What does the term R/h refer to when speaking of intensity? -
(ANSWER)Roentgens per hour
The ability to detect a small discontinuity or flaw is called: -
(ANSWER)radiographic sensitivity
Movement, geometry, and screen contact are three factors that affect
radiographic: - (ANSWER)unsharpness
The difference between the densities of two areas of a radiograph is called: -
(ANSWER)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: - (ANSWER)curie
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
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
ASNT RT I EXAM 2025 (ACTUAL EXAM) | ALL
QUESTIONS AND CORRECT ANSWERS (ALREADY
GRADED A+) | LATEST EXAM | VERIFIED ANSWERS
Although there may be other reasons for using calcium tungstate screens in
industrial radiography, they are most usually used to: - (ANSWER)Decrease
exposure time
In film radiography, pentrameters are usually placed: - (ANSWER)on the source
side of the test object
The penetrating ability of an x-ray beam is governed by: - (ANSWER)Kilovoltage
Co-60 used in nondestructive testing emits: - (ANSWER)Gamma rays
A densitometer is an instrument for measuring: - (ANSWER)film density
Three liquids which are essential to process an exposed film properly are: -
(ANSWER)Developer, fixer and water
The two most common causes for excessively high-density radiographs are: -
(ANSWER)overexposure and underdevelopment
the time required for one-half of the atoms in a particular sample of radioactive
material to disintegrate is called: - (ANSWER)a half- life
, 2
What does the term R/h refer to when speaking of intensity? -
(ANSWER)Roentgens per hour
The ability to detect a small discontinuity or flaw is called: -
(ANSWER)radiographic sensitivity
Movement, geometry, and screen contact are three factors that affect
radiographic: - (ANSWER)unsharpness
The difference between the densities of two areas of a radiograph is called: -
(ANSWER)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: - (ANSWER)curie
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
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
