NDT Radiography Testing with all Correct & 100% Verified
Answers |Latest Version |Already Graded A+
In comparison with lower-voltage radiographs, high voltage radiographic images have:
✔Correct Answer-Less contrast sensitivity
Radiographic inspection should be used for crack detection only when: ✔Correct Answer-The
orientation of the crack is known
Who is given credit for the discovery of X-ray? ✔Correct Answer-Wilhelm Roentgen
Bremsstrahlung production of X-rays produces radiation that is composed of: ✔Correct
Answer-A continuous spectrum of energies over some range
Who is given credit for the discovery of radioactive materials? ✔Correct Answer-Henri
Becquerel
The amount of geometric unsharpness in a radiograph is affected by: ✔Correct Answer-The
source to film distance
The source to object distance
The size of the source
The factor that indicates how much attenuation will take place per centimeter is known as the:
✔Correct Answer-Linear attenuation coefficient
A radiograph made with an exposure of 8 mAm produces a density of 1.8. The sensitometric
curve shows a difference in relative exposure between a density of 1.8 and the target density of
2.5 is 4. What must the new exposure time be to produce a radiograph with a density of 2.5?
✔Correct Answer-32 mAminutes
The rate at which a radioactive isotope changes to a more stable atom is know as the:
✔Correct Answer-Isotope decay rate
Which two types of radiation-matter interactions account for the majority of attenuation in
typical industrial radiography? ✔Correct Answer-Compton Scattering and photoelectric
absorption
Manmade sources of radioactive sources are produced by: ✔Correct Answer-Introducing an
extra neutron to the atoms of the source material
X-rays and Gamma rays are a form of: ✔Correct Answer-Electromagnetic radiation
Answers |Latest Version |Already Graded A+
In comparison with lower-voltage radiographs, high voltage radiographic images have:
✔Correct Answer-Less contrast sensitivity
Radiographic inspection should be used for crack detection only when: ✔Correct Answer-The
orientation of the crack is known
Who is given credit for the discovery of X-ray? ✔Correct Answer-Wilhelm Roentgen
Bremsstrahlung production of X-rays produces radiation that is composed of: ✔Correct
Answer-A continuous spectrum of energies over some range
Who is given credit for the discovery of radioactive materials? ✔Correct Answer-Henri
Becquerel
The amount of geometric unsharpness in a radiograph is affected by: ✔Correct Answer-The
source to film distance
The source to object distance
The size of the source
The factor that indicates how much attenuation will take place per centimeter is known as the:
✔Correct Answer-Linear attenuation coefficient
A radiograph made with an exposure of 8 mAm produces a density of 1.8. The sensitometric
curve shows a difference in relative exposure between a density of 1.8 and the target density of
2.5 is 4. What must the new exposure time be to produce a radiograph with a density of 2.5?
✔Correct Answer-32 mAminutes
The rate at which a radioactive isotope changes to a more stable atom is know as the:
✔Correct Answer-Isotope decay rate
Which two types of radiation-matter interactions account for the majority of attenuation in
typical industrial radiography? ✔Correct Answer-Compton Scattering and photoelectric
absorption
Manmade sources of radioactive sources are produced by: ✔Correct Answer-Introducing an
extra neutron to the atoms of the source material
X-rays and Gamma rays are a form of: ✔Correct Answer-Electromagnetic radiation
