Level 1 - Radiography Questions

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Radiography Quizzes & Trivia
Level 1 Radiography test - 135+ multiple choice questions

  
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1.  Although there may be other reasons for using calcium tungstate screens in industrial radiography, they are most usually used to:
A.
B.
C.
D.
2.  An excellent radiograph is obtained under given conditions of exposure with the film located at a distance of 36 inches from the target of the X-ray tube. If the film is now placed only 18 inches from the target, and all exposure conditions except time are held constant, the new exposure time will be:
A.
B.
C.
D.
3.  An excellent radiograph is obtained under given exposure conditions with a tube current of 5 milliamperes and an exposure time of 12 minutes. If other conditions are not changed, what exposure time would be required if the X-ray tube current could be raised to 10 milliamperes?
A.
B.
C.
D.
4.  In film radiography, penetrameters are usually placed:
A.
B.
C.
D.
5.  When radiographing to the 2-2T quality level, an ASTM penetrameter for 1/2-inch thick 2024 aluminum alloy has a thickness of:
A.
B.
C.
D.
6.  The penetrating ability of an X-ray beam is governed by:
A.
B.
C.
D.
7.  Cobalt-60 used in nondestructive testing emits:
A.
B.
C.
D.
8.  A densitometer is:
A.
B.
C.
D.
9.  Three liquids which are essential to process an exposed film properly are:
A.
B.
C.
D.
10.  The two most common causes for excessively high-density radiographs are:
A.
B.
C.
D.
11.  The time required for one-half of the atoms in a particular sample of radioactive material to disintegrate is called:
A.
B.
C.
D.
12.  What does the term R/hr refer to when speaking of intensity:
A.
B.
C.
D.
13.  The ability to detect a small discontinuity or flaw is called:
A.
B.
C.
D.
14.  Movement, geometry, and screen contact are three factors that affect radiographic:
A.
B.
C.
D.
15.  The difference between the densities of two areas of a radiograph is called:
A.
B.
C.
D.
16.  Upon completing an X-ray exposure and turning the equipment off:
A.
B.
C.
D.
17.  The most widely used unit of measurement for measuring the rate at which the output of a gamma-ray source decays is the:
A.
B.
C.
D.
18.  Exposure to X rays or gamma rays:
A.
B.
C.
D.
19.  Which dose would be dangerous, if not fatal, if applied to the entire body in a short period of time:
A.
B.
C.
D.
20.  When doing gamma-ray radiography with high-intensity emitters, the sources are best handled:
A.
B.
C.
D.
21.  If a film is placed in a developer solution and allowed to develop without any agitation:
A.
B.
C.
D.
22.  The selection of the proper type of film to be used for the X-ray examination of a particular part depends on:
A.
B.
C.
D.
23.  When radiographing a part which contains a large crack, the crack will appear on the radiograph as:
A.
B.
C.
D.
24.  A cobalt-60 source has a half-life of
A.
B.
C.
D.
25.  X-ray heat is generated by:
A.
B.
C.
D.
26.  The voltage and waveform applied to the X-ray tube by a high-voltage transformer primarily determines the:
A.
B.
C.
D.
27.  Lead foil in direct contact with X-ray film:
A.
B.
C.
D.
28.  Fluorescent intensifying screens are usually mounted in pairs in rigid holders called:
A.
B.
C.
D.
29.  Radiographic sensitivity, in the context of the minimum detectable flaw size, depends on:
A.
B.
C.
D.
30.  In order to decrease geometric unsharpness:
A.
B.
C.
D.
31.  As the kilovoltage applied to the X-ray tube is raised:
A.
B.
C.
D.
32.  In order to increase the intensity of X-radiation:
A.
B.
C.
D.
33.  Primary radiation which strikes a film holder or cassette through a thin portion of the specimen will cause scattering into the shadows of the adjacent thicker portions producing an effect called:
A.
B.
C.
D.
34.  Scattered radiation caused by any material, such as a wall or floor, table top, or cassette that is located in back of the film is known as:
A.
B.
C.
D.
35.  Which of the following materials is suitable for use in vessels or pails used to mix processing solutions:
A.
B.
C.
D.
36.  Any of the body tissues may be injured by excessive exposure to X or gamma rays but particularly sensitive are:
A.
B.
C.
D.
37.  A general rule used to define the amount of radiation exposure that is excessive is:
A.
B.
C.
D.
38.  X-ray exposure may be due to:
A.
B.
C.
D.
39.  A general rune often employed for determining the kilovoltage to be used when X-raying a part is:
A.
B.
C.
D.
40.  If a piece of lead 1/2-inch this is placed in the path of a beam of radiation emanating from cobalt-60, it will reduce the dose rate at a given location by:
A.
B.
C.
D.
41.  Excessive exposure of film to light prior to development of the film will most likely result in:
A.
B.
C.
D.
42.  White crescent-shaped marks on an exposed X-ray film are most likely caused by:
A.
B.
C.
D.
43.  Reticulation resulting in a puckered or netlike film surface is probably caused by:
A.
B.
C.
D.
44.  Frilling or loosening of the emulsion from the base of the film is most likely caused by:
A.
B.
C.
D.
45.  If an exposure time of 60 seconds was necessary using a 4-foot source-to-film distance for a particular exposure, what time would be necessary if a 2-foot source-to-film distance is used and all other variables remain the same?
A.
B.
C.
D.
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