ASNT RT 1, 2, 3 AND COMPREHENSIVE FINAL
EXAM | 2025 ACTUAL EXAM WITH EXPERT
VERIFIED CORRECT ANSWERS | GUARANTEED
CERTIFICATION SUCCESS
low voltage x-ray tubes are generally fitted with windows made of:
beryllium
a monochromatic x-ray beam is:
a beam consisting of a single wavelength
the general method of producing x-rays involves the sudden deceleration of high
velocity electrons in a solid body called a:
target
if it were necessary to radiograph a 7" thick steel product, which gamma ray
source would most likely be used?
co-60
,a co-60 gamma source has an approximate practical thickness limit of:
9" of steel or its equivalent
the absorption of gamma rays from a given source when passing through matter
depends on the:
atomic number, density, and thickness of the matter
the fact that gases, when bombarded by radiation ionize and become electrical
conductors make them useful in:
radiation detection equipment
the velocity of electrons striking the target in an x-ray tube is a function of the:
voltage difference between the cathode and anode
the uneven distribution of developed grains within the emulsion of a processed x-
ray film causes the subjective impression of:
graininess
,the gamma ray intensity at 1 ft from a 1 Ci source of radioactive co-60 is nearest
to:
15 R/h
the focal spot in an x-ray tube:
should be as small as possible without unduly shortening the life of the tube
in an x-ray tube, the filament and focusing cup are the two essential parts of the:
cathode
the quantity of radiation which will produce, by means of ionization, one
electrostatic unit of electricity in 0.001293 g of dry air is known as a:
Roentgen
the specific activity of an isotopic source is usually measured in:
curies per gram (Ci/g)
which isotope has the longest half-life?
Cs- 137
, the primary form of energy conversion when electrons strike a target in an x-ray
tube results in the production of:
heat
the slope of a straight line joining two points of specified densities on a
characteristic curve of a film is known as the:
average gradient
an x-ray film having wide latitude also has, by definition:
low contrast
the purpose of circulating oil in some types of x-ray tubes is to:
dissipate heat
an x-ray tube with a small focal spot is considered better than one with a large
focal spot when it is desired to obtain:
better definition
EXAM | 2025 ACTUAL EXAM WITH EXPERT
VERIFIED CORRECT ANSWERS | GUARANTEED
CERTIFICATION SUCCESS
low voltage x-ray tubes are generally fitted with windows made of:
beryllium
a monochromatic x-ray beam is:
a beam consisting of a single wavelength
the general method of producing x-rays involves the sudden deceleration of high
velocity electrons in a solid body called a:
target
if it were necessary to radiograph a 7" thick steel product, which gamma ray
source would most likely be used?
co-60
,a co-60 gamma source has an approximate practical thickness limit of:
9" of steel or its equivalent
the absorption of gamma rays from a given source when passing through matter
depends on the:
atomic number, density, and thickness of the matter
the fact that gases, when bombarded by radiation ionize and become electrical
conductors make them useful in:
radiation detection equipment
the velocity of electrons striking the target in an x-ray tube is a function of the:
voltage difference between the cathode and anode
the uneven distribution of developed grains within the emulsion of a processed x-
ray film causes the subjective impression of:
graininess
,the gamma ray intensity at 1 ft from a 1 Ci source of radioactive co-60 is nearest
to:
15 R/h
the focal spot in an x-ray tube:
should be as small as possible without unduly shortening the life of the tube
in an x-ray tube, the filament and focusing cup are the two essential parts of the:
cathode
the quantity of radiation which will produce, by means of ionization, one
electrostatic unit of electricity in 0.001293 g of dry air is known as a:
Roentgen
the specific activity of an isotopic source is usually measured in:
curies per gram (Ci/g)
which isotope has the longest half-life?
Cs- 137
, the primary form of energy conversion when electrons strike a target in an x-ray
tube results in the production of:
heat
the slope of a straight line joining two points of specified densities on a
characteristic curve of a film is known as the:
average gradient
an x-ray film having wide latitude also has, by definition:
low contrast
the purpose of circulating oil in some types of x-ray tubes is to:
dissipate heat
an x-ray tube with a small focal spot is considered better than one with a large
focal spot when it is desired to obtain:
better definition
