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Level 1 - Radiography Questions

45 Questions  I  By Mbelousov
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Radiography Quizzes & Trivia
Level 1 Radiography test - 135+ multiple choice questions

  
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1.  Why is cobalt-60 used as a radiation source for medium-weight metals of thickness ranges from 1.5 to 9 inches:
A.
B.
C.
D.
2.  L1A Lvl I technician performing a radiographic test is permitted* to accept or reject the part provided that written instructions or procedures are given to him by a Lvl II or Lvl III. (*in accordance with SNT-TC-1A)
A.
B.
3.  An unshielded isotope sources gives a dosage rate of 900 mR per hour at 10 feet. What would the unshielded dosage rate be at 30 feet?
A.
B.
C.
D.
4.  L9a control strip that has been exposed under a step wedge and processed after each replenishment is also used to check excess fogging caused by safe-lights
A.
B.
5.  L3Back scattered radiation is often caused by low energy X-rays whose electron path was changed within the film.
A.
B.
6.  A cobalt-60 source has a half-life of
A.
B.
C.
D.
7.  One of the general rules concerning the application of geometric principles of shadow formation to radiography is:
A.
B.
C.
D.
8.  L2The "freq" of an X or gamma ray is measured in cycles per second.
A.
B.
9.  If a fluorescent screen is accidentally exposed to unattenuated X-rays, which of the following occurs:
A.
B.
C.
D.
10.  Short wavelength electromagnetic radiation produced during the disintegration of nuclei or radioactive substances is called:
A.
B.
C.
D.
11.  A fluorescent intensifying screen will
A.
B.
C.
D.
12.  The difference between the densities of two areas of a radiograph is called:
A.
B.
C.
D.
13.  L9when safe-lights are used in the darkroom, there is no danger of the x-ray film being "fogged"
A.
B.
14.  L9"clearing time" refers to the time the film is in the stop bath(fixer)
A.
B.
15.  L5A "hard" x-ray travels faster than a "soft" x-ray, and that is why the "hard" x-rays have more energy.
A.
B.
16.  In film radiography, penetrameters are usually placed:
A.
B.
C.
D.
17.  L2If the discontinuity in an object was less dense than the specimen, then it would appear on the film as a dark spot.
A.
B.
18.  L9most radiographic film uses clear acetate or polyester base with emulsion on both sides
A.
B.
19.  L2Visible light has a longer wavelength than X and Gamma rays.
A.
B.
20.  Lead foil in direct contact with X-ray film:
A.
B.
C.
D.
21.  "primary" radiation is considered to be any radiation that has not gone through a photolectric effect
A.
B.
22.  Any of the body tissues may be injured by excessive exposure to X or gamma rays but particularly sensitive are:
A.
B.
C.
D.
23.  Three liquids which are essential to process an exposed film properly are:
A.
B.
C.
D.
24.  Upon completing an X-ray exposure and turning the equipment off:
A.
B.
C.
D.
25.  Unwanted inclusions in a part will appear on a radiograph as:
A.
B.
C.
D.
26.  The three main steps in processing a radiograph are:
A.
B.
C.
D.
27.  A densitometer is:
A.
B.
C.
D.
28.  L2When X-ray film is developed, the portion that was exposed to radiation turns dark.
A.
B.
29.  The most common material used to provide protection against X rays is:
A.
B.
C.
D.
30.  Exposure to X rays or gamma rays:
A.
B.
C.
D.
31.  In order to decrease geometric unsharpness:
A.
B.
C.
D.
32.  L5X & Gamma rays differ in that the gamma ray is actually a particle of matter that has both mass and weight
A.
B.
33.  When radiographing a part which contains a large crack, the crack will appear on the radiograph as:
A.
B.
C.
D.
34.  X-ray exposure may be due to:
A.
B.
C.
D.
35.  L9water spots, crimp marks and static marks are all considered to be "artifacts" when they appear on the film
A.
B.
36.  L5when the energy form of an x-ray tube has penetrated through 3 half-value layers, only 3/4 of the original energy remains
A.
B.
37.  L1The selection of one test method over another is usually the decision of the Lvl I technician performing the test.
A.
B.
38.  L1ASNT provides a service for examining Lvl I, II, and III personnel in the General and Specific areas.
A.
B.
39.  To produce X rays, electrons are accelerated to a high velocity by an electrical field and then suddenly stopped by a collision with a solid body. This body is called:
A.
B.
C.
D.
40.  Reticulation resulting in a puckered or netlike film surface is probably caused by:
A.
B.
C.
D.
41.  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.
42.  The two most common causes for excessively high-density radiographs are:
A.
B.
C.
D.
43.  Which dose would be dangerous, if not fatal, if applied to the entire body in a short period of time:
A.
B.
C.
D.
44.  The normal development time for manually processing X-ray film is:
A.
B.
C.
D.
45.  X rays and gamma rays always travel
A.
B.
C.
D.
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