RT NDT Questions with all Correct & 100% Verified
Answers |Actual Complete Update |Already Graded A+
After traveling through two half-value layers, the incident radiation has been reduced to:
a) 50%
b) 35%
c) 20%
d) None of the above ✔Correct Answer-d) None of the above
Bremsstrahlung (i.e., braking radiation) production of X-rays produces radiation that is
composed of:
a) A small number of very define energies
b) A continuous spectrum of energies over some range
c) Radiation of only one energy
d) None of the above ✔Correct Answer-b) A continuous spectrum of energies over some
range
Collimators are used to:
a) Reduce the radiation beam spread
b) Filter the radiation beam
c) Increase film latitude
d) Decrease film latitude ✔Correct Answer-a) Reduce the radiation beam spread
Image quality indicators (IQI's) provide information about the level of:
a) Resolution and contrast sensitivity
b) Resolution and film latitude
c) Contrast sensitivity and latitude
d) Contrast sensitivity only ✔Correct Answer-a) Resolution and contrast sensitivity
In comparison with lower-voltage radiographs, high voltage radiograhic images have:
a) Less contrast sensitivity
b) Greater contrast sensitivity
c) Greater amounts of scatter radiation relative to primary beam intensity
d) Less latitude ✔Correct Answer-a) Less contrast sensitivity
Ionizing radiation can be used in industrial radiography because the health hazards:
a) Have been eliminated with controls and procedures
b) Are minimized through controls and procedures
c) Are worth the risk
d) Are being ignored ✔Correct Answer-b) Are minimized through controls and procedures
, Newton's Inverse Square Law is useful in radiography because it indicates how the radiation
intensity is affected by:
(a) Radioactive decay
(b) Distance from the source
(c) The size of the source
(d) None of the above ✔Correct Answer-(b) Distance from the source
On a film radiograph, an area of high density in the test component will appear:
(a) Lighter than the surrounding area
(b) Darker than the surrounding area
(c) More defined than the surrounding area
(d) Less defined than the surrounding area ✔Correct Answer-(a) Lighter than the surrounding
area
The amount of geometric unsharpness in a radiograph is affected by:
(a) The source to film distance
(b) The source to object distance
(c) The size of the source
(d) All of the above ✔Correct Answer-(d) All of the above
The rate at which a radioactive isotope changes to a more stable atom is know as the:
(a) Isotope decay rate
(b) Half-life
(c) Activity
(d) Attenuation ✔Correct Answer-(a) Isotope decay rate
Thin sheets of lead foil in contact with the film during exposure increase the film density
because:
(a) They act as a filter to harden the radiation beam
(b) They reduce the amount of scatter radiation
(c) Incident radiation liberates electrons which help to expose the film
(d) None of the above ✔Correct Answer-(c) Incident radiation liberates electrons which help
to expose the film
The target of an X-ray tube is often made out of tungsten becuase:
(a) It has a high atomic mass which will result in more X-rays being generated due to atomic
particle
interactions
(b) It is an inexpensive material that is easy to machine
(c) It have very high thermal conductivity which makes it easy to cool
(d) None of the above ✔Correct Answer-(a) It has a high atomic mass which will result in
more X-rays being generated due to atomic particle
interactions
Answers |Actual Complete Update |Already Graded A+
After traveling through two half-value layers, the incident radiation has been reduced to:
a) 50%
b) 35%
c) 20%
d) None of the above ✔Correct Answer-d) None of the above
Bremsstrahlung (i.e., braking radiation) production of X-rays produces radiation that is
composed of:
a) A small number of very define energies
b) A continuous spectrum of energies over some range
c) Radiation of only one energy
d) None of the above ✔Correct Answer-b) A continuous spectrum of energies over some
range
Collimators are used to:
a) Reduce the radiation beam spread
b) Filter the radiation beam
c) Increase film latitude
d) Decrease film latitude ✔Correct Answer-a) Reduce the radiation beam spread
Image quality indicators (IQI's) provide information about the level of:
a) Resolution and contrast sensitivity
b) Resolution and film latitude
c) Contrast sensitivity and latitude
d) Contrast sensitivity only ✔Correct Answer-a) Resolution and contrast sensitivity
In comparison with lower-voltage radiographs, high voltage radiograhic images have:
a) Less contrast sensitivity
b) Greater contrast sensitivity
c) Greater amounts of scatter radiation relative to primary beam intensity
d) Less latitude ✔Correct Answer-a) Less contrast sensitivity
Ionizing radiation can be used in industrial radiography because the health hazards:
a) Have been eliminated with controls and procedures
b) Are minimized through controls and procedures
c) Are worth the risk
d) Are being ignored ✔Correct Answer-b) Are minimized through controls and procedures
, Newton's Inverse Square Law is useful in radiography because it indicates how the radiation
intensity is affected by:
(a) Radioactive decay
(b) Distance from the source
(c) The size of the source
(d) None of the above ✔Correct Answer-(b) Distance from the source
On a film radiograph, an area of high density in the test component will appear:
(a) Lighter than the surrounding area
(b) Darker than the surrounding area
(c) More defined than the surrounding area
(d) Less defined than the surrounding area ✔Correct Answer-(a) Lighter than the surrounding
area
The amount of geometric unsharpness in a radiograph is affected by:
(a) The source to film distance
(b) The source to object distance
(c) The size of the source
(d) All of the above ✔Correct Answer-(d) All of the above
The rate at which a radioactive isotope changes to a more stable atom is know as the:
(a) Isotope decay rate
(b) Half-life
(c) Activity
(d) Attenuation ✔Correct Answer-(a) Isotope decay rate
Thin sheets of lead foil in contact with the film during exposure increase the film density
because:
(a) They act as a filter to harden the radiation beam
(b) They reduce the amount of scatter radiation
(c) Incident radiation liberates electrons which help to expose the film
(d) None of the above ✔Correct Answer-(c) Incident radiation liberates electrons which help
to expose the film
The target of an X-ray tube is often made out of tungsten becuase:
(a) It has a high atomic mass which will result in more X-rays being generated due to atomic
particle
interactions
(b) It is an inexpensive material that is easy to machine
(c) It have very high thermal conductivity which makes it easy to cool
(d) None of the above ✔Correct Answer-(a) It has a high atomic mass which will result in
more X-rays being generated due to atomic particle
interactions
