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ASNT Level III: Ch. 4 (RT) Questions with Detailed
Verified Answers
The penetrating ability of an X-ray beam is governed by: Ans: ✓ ✓ ✓ kilovoltage or wavelength
Two X-ray machines operating at the same nominal kilovoltage and milliamperage settings: Ans: ✓
✓ ✓ may give not only different intensities but also different energies of radiation
Short wavelength electromagnetic radiation produced during the disintegration of nuclei of
radioactive substances is called: Ans: ✓ ✓ ✓ gamma radiation
Almost all gamma radiography is performed with: Ans: ✓ ✓ ✓ artificially produced isotopes
The energy of gamma rays is expressed by which of the following units of measurement: Ans: ✓ ✓
✓ Kiloelectronvolts (keV) or megaelectronvolts (MeV)
Of the following, the source providing the most penetrating radiation is: Ans: ✓ ✓ ✓ 15 MeV
betatron
The difference between the densities of two areas of a radiograph is called: Ans: ✓ ✓ ✓
radiographic contrast
The fact that gasses, when bombarded by radiation, ionize and become electrical conductors makes
them useful in: Ans: ✓ ✓ ✓ radiation detection equipment
© Get it right 2025 Getaway - Stuvia US All rights reserved
ASNT Level III: Ch. 4 (RT) Questions with Detailed
Verified Answers
The penetrating ability of an X-ray beam is governed by: Ans: ✓ ✓ ✓ kilovoltage or wavelength
Two X-ray machines operating at the same nominal kilovoltage and milliamperage settings: Ans: ✓
✓ ✓ may give not only different intensities but also different energies of radiation
Short wavelength electromagnetic radiation produced during the disintegration of nuclei of
radioactive substances is called: Ans: ✓ ✓ ✓ gamma radiation
Almost all gamma radiography is performed with: Ans: ✓ ✓ ✓ artificially produced isotopes
The energy of gamma rays is expressed by which of the following units of measurement: Ans: ✓ ✓
✓ Kiloelectronvolts (keV) or megaelectronvolts (MeV)
Of the following, the source providing the most penetrating radiation is: Ans: ✓ ✓ ✓ 15 MeV
betatron
The difference between the densities of two areas of a radiograph is called: Ans: ✓ ✓ ✓
radiographic contrast
The fact that gasses, when bombarded by radiation, ionize and become electrical conductors makes
them useful in: Ans: ✓ ✓ ✓ radiation detection equipment
© Get it right 2025 Getaway - Stuvia US All rights reserved
