Radiographic testing Level II – General exam
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- Question 1 of 40
1. Question
A monochromatic X-ray beam is:
- Question 2 of 40
2. Question
The general method of producing X-rays involves the sudden deceleration of high velocity electrons in a solid body called a:
- Question 3 of 40
3. Question
The absorption of gamma rays from a given source when passing through matter depends on the:
- Question 4 of 40
4. Question
The velocity of electrons striking the target in an X-ray tube is a function of the:
- Question 5 of 40
5. Question
The uneven distribution of developed grains within the emulsion of a processed X-ray film causes the subjective impression of:
- Question 6 of 40
6. Question
Of the following, the source providing the most penetrating radiation is:
- Question 7 of 40
7. Question
The focal spot in an X-ray tube
- Question 8 of 40
8. Question
In an X-ray tube, the filament and focusing cup are the two essential parts of the:
- Question 9 of 40
9. Question
The specific activity of an isotopic source is usually measured in:
- Question 10 of 40
10. Question
Which of the following isotopes has the longest half-life?
- Question 11 of 40
11. Question
The primary form of energy conversion when electrons strike a target in an X-ray tube results in the production of:
- Question 12 of 40
12. Question
The slope of a straight line joining two points of specified densities on a characteristic curve of a film is known as the:
- Question 13 of 40
13. Question
An X-ray film having wide latitude also has, by definition:
- Question 14 of 40
14. 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:
- Question 15 of 40
15. 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:
- Question 16 of 40
16. Question
Filters used at the port of the X-ray tube:
- Question 17 of 40
17. Question
Almost all gamma radiography is performed with:
- Question 18 of 40
18. Question
The amount of unsharpness or blurring of a radiograph is:
- Question 19 of 40
19. Question
Images of discontinuities close to the source side of the specimen become less clearly defined as:
- Question 20 of 40
20. Question
The specific activity of Co-60 depends on the:
- Question 21 of 40
21. Question
The most commonly used target material in an X-ray tube is:
- Question 22 of 40
22. Question
In general, the quality of fluoroscopic equipment is best determined by:
- Question 23 of 40
23. Question
The formula (milliamperes x time) / distance2 is:
- Question 24 of 40
24. Question
The absorption of radiation by a material varies:
- Question 25 of 40
25. Question
The interval between the time a film is placed in a fixer solution and the time when the original diffuse, yellow milkiness disappears is known as:
- Question 26 of 40
26. Question
Which of the following X-ray generators would produce the narrowest cone of X-radiation?
- Question 27 of 40
27. Question
The quantitative measure of film blackening is referred to as:
- Question 28 of 40
28. Question
A curve that relates density with the logarithm of exposure or of relative exposure is called:
- Question 29 of 40
29. Question
Subject contrast is affected by:
- Question 30 of 40
30. Question
A qualitative term often used to indicate the size of the smallest detail that can be seen in a radiograph is:
- Question 31 of 40
31. Question
The degree of concentration of the radioactive material in a gamma ray source is referred to as the:
- Question 32 of 40
32. Question
The ability of a material to block or partially block the passage of X-rays and gamma rays is called:
- Question 33 of 40
33. Question
The ‘photoelectric’ effect involves:
- Question 34 of 40
34. Question
Charged particles passing through matter lose energy primarily because of:
- Question 35 of 40
35. Question
Adding chemicals to restore the activity of a developer solution during normal use is known as:
- Question 36 of 40
36. Question
Overall image quality of a radiograph is determined by its radiographic contrast and:
- Question 37 of 40
37. Question
Discontinuities caused by fatigue and/or corrosion are categorized as:
- Question 38 of 40
38. Question
Inherent discontinuities are those found in:
- Question 39 of 40
39. Question
Which of the following discontinuities is not related to the casting process?
- Question 40 of 40
40. Question
As the effective energy of the radiation increases: