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- Question 1 of 40
1. Question
The uneven distribution of developed grains within the emulsion of a processed X-ray film causes the subjective impression of:
CorrectIncorrect - Question 2 of 40
2. Question
Of the following, the source providing the most penetrating radiation is:
CorrectIncorrect - Question 3 of 40
3. Question
The focal spot in an X-ray tube:
CorrectIncorrect - Question 4 of 40
4. Question
Which of the following isotopes has the longest half-life?
CorrectIncorrect - Question 5 of 40
5. Question
The primary form of energy conversion when electrons strike a target in an X-ray tube results in the production of:
CorrectIncorrect - Question 6 of 40
6. Question
The slope of a straight line joining two points of specified densities on a characteristic curve of a film is known as the:
CorrectIncorrect - Question 7 of 40
7. Question
An X-ray film having wide latitude also has, by definition:
CorrectIncorrect - Question 8 of 40
8. 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 9 of 40
9. 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 10 of 40
10. Question
Filters used at the port of the X-ray tube;
CorrectIncorrect - Question 11 of 40
11. Question
The amount of unsharpness or blurring of a radiograph is:
CorrectIncorrect - Question 12 of 40
12. Question
In general, the quality of the fluoroscopic equipment is best determined by:
CorrectIncorrect - Question 13 of 40
13. Question
The absorption of radiation by a material varies:
CorrectIncorrect - Question 14 of 40
14. 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:
CorrectIncorrect - Question 15 of 40
15. Question
A qualitative term often used to indicate the size of the smallest detail that can be seen in a radiograph is:
CorrectIncorrect - Question 16 of 40
16. Question
Charged particles passing through matter lose energy primarily because of:
CorrectIncorrect - Question 17 of 40
17. Question
Inherent discontinuities are those found in:
CorrectIncorrect - Question 18 of 40
18. Question
Which of the following discontinuities is not related to the casting process?
CorrectIncorrect - Question 19 of 40
19. Question
In fluoroscopic testing, a fundamental difficulty is the relative low brightness level of the images. One method for increasing brightness utilizes one of the following which converts light energy from the initial phosphor surface to electrons which are accelerated and focused onto a smaller fluorescent screen.
CorrectIncorrect - Question 20 of 40
20. Question
A general rule governing the application of the geometric principles of shadow formation states that the:
CorrectIncorrect - Question 21 of 40
21. Question
Co-60 is reported to have a half-life of 5.3 years. By how much should exposure time be increased (over that used initially to produce excellent radiographs when the Co-60 source was new) when the source is two years old?
CorrectIncorrect - Question 22 of 40
22. Question
The final selection of the voltage to use to radiograph any specimen depends on _________________.
CorrectIncorrect - Question 23 of 40
23. Question
Besides serving as a filter, screens of high atomic numbers, such as lead and lead antimony, also:
CorrectIncorrect - Question 24 of 40
24. Question
The amount of unsharpness or blurring of a radiograph is:
CorrectIncorrect - Question 25 of 40
25. Question
The inherent filtration of an X-ray tube is a function of the:
CorrectIncorrect - Question 26 of 40
26. Question
The load that can be handled by an X-ray tube focal spot is governed by:
CorrectIncorrect - Question 27 of 40
27. Question
In certain cases, it may advantageous to pack lead shot around a specimen. The purpose for doing this is to:
CorrectIncorrect - Question 28 of 40
28. Question
A special radiographic method requiring two radiographs taken during separate exposures from two different positions to give the visual impression of a three-dimensional display when viewed in an optical device simultaneously is called:
CorrectIncorrect - Question 29 of 40
29. Question
The slope (steepness) of a characteristic curve is a measure of:
CorrectIncorrect - Question 30 of 40
30. Question
The factor equation is:
CorrectIncorrect - Question 31 of 40
31. Question
To compute the change in exposure that is required by a change in source-to-film distance, we would use the equation:
CorrectIncorrect - Question 32 of 40
32. Question
What is the one choice below that does not affect developer strength?
CorrectIncorrect - Question 33 of 40
33. Question
When other operating conditions are held constant, a change in tube current causes a change in radiation intensity emitted from an X-ray tube, the intensity being approximately proportional to tube current. What is the primary factor that prevents this from being exactly proportional?
CorrectIncorrect - Question 34 of 40
34. Question
A distinctive characteristic of high-voltage radiography is that:
CorrectIncorrect - Question 35 of 40
35. Question
When mixing the stop bath using glacial acetic acid, always:
CorrectIncorrect - Question 36 of 40
36. Question
The projected area of the target of an X-ray tube is called:
CorrectIncorrect - Question 37 of 40
37. Question
Source size, specimen thickness, and source-to-specimen distance are the three factors that determine the:
CorrectIncorrect - Question 38 of 40
38. Question
The earliest indications of radiation damage may be detected in the:
CorrectIncorrect - Question 39 of 40
39. Question
A large source size can be compensated for by __________________.
CorrectIncorrect - Question 40 of 40
40. 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