Level 1 - Radiography Questions

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

  
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1.  A fluoroscopic installation utilizing fluorescent screen requires:
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.  With a given exposure time and kilovoltages, a properly exposed radiograph is obtained with a 6 milliamperes-minutes exposure at the distance of 20 inches. It is desired to increase the sharpness of detail in the image by increasing the source-to-film distance to 40 inches. The correct milliamperes-minutes exposure to obtain the desired radiographic density at the increased distance is:
A.
B.
C.
D.
4.  Assuming that a good radiograph is obtained at a setting of 10 milliamperes in 40 seconds, how much time will be necessary to obtain one equivalent radiograph if the milliamperage is changed to 5 milliamperes (all other conditions remain constant):
A.
B.
C.
D.
5.  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.
6.  Beta particles are:
A.
B.
C.
D.
7.  L9"clearing time" refers to the time the film is in the stop bath(fixer)
A.
B.
8.  Radiographic sensitivity, in the context of the minimum detectable flaw size, depends on:
A.
B.
C.
D.
9.  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.
10.  Kilovoltage, exposure time, and source-to-film distance are three of the most important X-ray exposure factors that can be controlled. A fourth such exposure factor is:
A.
B.
C.
D.
11.  Water spots on films can be minimized by:
A.
B.
C.
D.
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12.  Lead foil in direct contact with X-ray film:
A.
B.
C.
D.
13.  L5The intensity of an x-ray beam is dependent upon the amount of electrons striking the tungsten target
A.
B.
14.  Short wavelength electromagnetic radiation produced during the disintegration of nuclei or radioactive substances is called:
A.
B.
C.
D.
15.  The most common material used to provide protection against X rays is:
A.
B.
C.
D.
16.  L5secondary radiation is never dangerous to the radiographer
A.
B.
17.  L9the developer solution transforms the silver bromide crystals to metallic silver causing the film to turn black
A.
B.
18.  In order to increase the intensity of X-radiation:
A.
B.
C.
D.
19.  Atoms, molecules, and various subatomic particles which carry either a positive or negative electrical charge are called:
A.
B.
C.
D.
20.  A properly exposed radiograph that is developed in a developer solution at a temperature of 58F for 5 minutes will probably be:
A.
B.
C.
D.
21.  The focal spot size of an X-ray machine must be known in order to determine:
A.
B.
C.
D.
22.  Fluoroscopy differs from radiography in that:
A.
B.
C.
D.
23.  The radiation intensity of a radioisotope:
A.
B.
C.
D.
24.  L3Radiographic sensitivity is considered to be a measure of how accurately a discontinuity can be imaged.
A.
B.
25.  Although there may be other reasons for using calcium tungstate screens in industrial radiography, they are most usually used to:
A.
B.
C.
D.
26.  L2X-rays have a higher freq than visible light and therefore have a higher velocity.
A.
B.
27.  L2Wavelength is usually described as the distance between two angstrom units.
A.
B.
28.  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.
29.  Three liquids which are essential to process an exposed film properly are:
A.
B.
C.
D.
30.  The reason a "shim" is used in radiographic setup is to:
A.
B.
C.
D.
31.  A general rune often employed for determining the kilovoltage to be used when X-raying a part is:
A.
B.
C.
D.
32.  The cause for poor image definition could be considered:
A.
B.
C.
D.
33.  The density of a radiograph image refers to:
A.
B.
C.
D.
34.  The normal development time for manually processing X-ray film is:
A.
B.
C.
D.
35.  L9the basic difference between types of x-ray film is due to the size of the grains of silver bromide
A.
B.
36.  As the kilovoltage applied to the X-ray tube is raised:
A.
B.
C.
D.
37.  L3Inherent unsharpness causes poor contrast & definition but can be eliminated by using a longer source-to-film distance.
A.
B.
38.  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.
39.  L5X & Gamma rays differ in that the gamma ray is actually a particle of matter that has both mass and weight
A.
B.
40.  The sharpness of the outline in the image of the radiograph is a measure of:
A.
B.
C.
D.
41.  Which has the shortest wavelengths:
A.
B.
C.
D.
42.  The primary parts of an atom are:
A.
B.
C.
D.
43.  X-ray heat is generated by:
A.
B.
C.
D.
44.  When referring to a "2T" or "4T" hole in the ASTM penetrameter, the T refers to:
A.
B.
C.
D.
45.  A sheet of lead with an opening cut in the shape of the part to be radiographed may be used to decrease the effect of scattered radiation which undercuts the specimens. Such a device is called:
A.
B.
C.
D.
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