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- Question 1 of 40
1. Question
A general rule governing the application of the geometric principles of shadow formation states that the:
CorrectIncorrect - Question 2 of 40
2. Question
All other factors being the same, radiographic sharpness or definition is improved by using:
CorrectIncorrect - Question 3 of 40
3. Question
The minimum source-to-film distance needed to produce acceptable radiographs depends on the focal spot (source) size, the maximum allowable unsharpness, and the:
CorrectIncorrect - Question 4 of 40
4. Question
Which of the following should be done to preserve radiographs during long-term storage?
CorrectIncorrect - Question 5 of 40
5. Question
The difference in density between different parts of a radiograph is called:
CorrectIncorrect - Question 6 of 40
6. Question
Heat affected zone cracking is not easily detected with radiographic testing because:
CorrectIncorrect - Question 7 of 40
7. Question
Inherent discontinuities are those found in:
CorrectIncorrect - Question 8 of 40
8. Question
A front filter at the film or at the source, or multiple-films in the same holder, are techniques that are used to compensate for
CorrectIncorrect - Question 9 of 40
9. Question
The energy level of X-rays is controlled by the:
CorrectIncorrect - Question 10 of 40
10. Question
The specific activity of a gamma ray source is important because it determines:
CorrectIncorrect - Question 11 of 40
11. Question
In radiography the term “RBE” stands for:
CorrectIncorrect - Question 12 of 40
12. Question
The radiation effects which can be passed on to the offspring or to a later generation of a person receiving radiation are called:
CorrectIncorrect - Question 13 of 40
13. Question
The pocket dosimeter has the advantage of:
CorrectIncorrect - Question 14 of 40
14. Question
. When ionizing radiation enters the ion chamber of an ionization chamber survey meter, positive ions flow to the negative electrode(s) and negative ions flow to the positive electrode(s).
CorrectIncorrect - Question 15 of 40
15. Question
The formula for the inverse square law is:
CorrectIncorrect - Question 16 of 40
16. Question
Inherent unsharpness is caused by free electrons that are generated by the radiographic ray as it passes through:
CorrectIncorrect - Question 17 of 40
17. Question
Lead foil is placed behind the film to:
CorrectIncorrect - Question 18 of 40
18. Question
M1 x T1 = M2 x T2 and C2 x T2 = C2 x T2 are equations for the:
CorrectIncorrect - Question 19 of 40
19. Question
The factor equation is:
CorrectIncorrect - Question 20 of 40
20. Question
The maximum film density to which the radiograph should be exposed is dependent upon
CorrectIncorrect - Question 21 of 40
21. Question
The emulsion or image layer of the unexposed film contains grains of:
CorrectIncorrect - Question 22 of 40
22. Question
All other factors being equal, which two types of film would give the sharpest images?
CorrectIncorrect - Question 23 of 40
23. Question
Low voltage X-ray tubes are generally fitted with windows made of:
CorrectIncorrect - Question 24 of 40
24. Question
A monochromatic X-ray beam is:
CorrectIncorrect - Question 25 of 40
25. Question
The velocity of electrons striking the target in an X-ray tube is a function of the:
CorrectIncorrect - Question 26 of 40
26. Question
The uneven distribution of developed grains within the emulsion of a processed X-ray film causes the subjective impression of:
CorrectIncorrect - Question 27 of 40
27. Question
Of the following, the source providing the most penetrating radiation is:
CorrectIncorrect - Question 28 of 40
28. Question
The focal spot in an X-ray tube:
CorrectIncorrect - Question 29 of 40
29. Question
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:
CorrectIncorrect - Question 30 of 40
30. Question
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:
CorrectIncorrect - Question 31 of 40
31. Question
A voltage selector consisting of an iron core transformer with a single winding having a series of taps at various points on the winding is called:
CorrectIncorrect - Question 32 of 40
32. Question
Filters placed between the X-ray tube and specimen tend to reduce scatter radiation undercutting the specimen by
CorrectIncorrect - Question 33 of 40
33. Question
The amount of unsharpness or blurring of a radiograph is:
CorrectIncorrect - Question 34 of 40
34. Question
Images of discontinuities close to the source side of the specimen become less clearly defined as:
CorrectIncorrect - Question 35 of 40
35. Question
The inherent filtration of an X-ray tube is a function of the:
CorrectIncorrect - Question 36 of 40
36. Question
The formula (milliamperes x time) ÷ distance² is:
CorrectIncorrect - Question 37 of 40
37. Question
The load that can be handled by an X-ray tube focal spot is governed by:
CorrectIncorrect - Question 38 of 40
38. Question
In certain cases, it may advantageous to pack lead shot around a specimen. The purpose for doing this is to:
CorrectIncorrect - Question 39 of 40
39. Question
The absorption of radiation by a material varies:
CorrectIncorrect - Question 40 of 40
40. Question
Which of the following X-ray generators would produce the narrowest cone of X-radiation?
CorrectIncorrect