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Level 1 - Radiography Questions

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

  
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1.  The voltage and waveform applied to the X-ray tube by a high-voltage transformer primarily determines the:
A.
B.
C.
D.
2.  Although there may be other reasons for using calcium tungstate screens in industrial radiography, they are most usually used to:
A.
B.
C.
D.
3.  The radiation quality of a manna-ray source is:
A.
B.
C.
D.
4.  The formula for determining permissible accumulated personnel dose is:
A.
B.
C.
D.
5.  Cobalt-60 used in nondestructive testing emits:
A.
B.
C.
D.
6.  A thin metallic sheet (brass, copper, aluminum, etc) placed at the source to reduce effects of softer radiation is known as:
A.
B.
C.
D.
7.  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.
8.  A penetrameter is used to indicate:
A.
B.
C.
D.
9.  L3Large grain films provide the best definition in a radiograph.
A.
B.
10.  L3Back scattered radiation is often caused by low energy X-rays whose electron path was changed within the film.
A.
B.
11.  White crescent-shaped marks on an exposed X-ray film are most likely caused by:
A.
B.
C.
D.
12.  L5secondary radiation is never dangerous to the radiographer
A.
B.
13.  L3Internal scatter is caused by X-ray energy that has taken a new direction within the specimen being radiographed.
A.
B.
14.  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.
15.  L2The higher the "amplitude" of an electromagnetic wave, the higher the energy.
A.
B.
16.  In performing fluoroscopic examination of a part, it is important to control
A.
B.
C.
D.
17.  L2A "cycle" is considered to be one complete wave either from peak to peak or trough to trough.
A.
B.
18.  Radiation arising directly from the target of an X-ray tube or an accelerator, or from a radioactive source, is usually referred to as:
A.
B.
C.
D.
19.  The difference between the densities of two areas of a radiograph is called:
A.
B.
C.
D.
20.  L2The "latent image" refers to an image on the radiograph that cannot be seen without the aid a high intensity viewer.
A.
B.
21.  The term used to express the number of curies of radioactivity per gram or ounce of source weight is:
A.
B.
C.
D.
22.  Short wavelength electromagnetic radiation produced during the disintegration of nuclei or radioactive substances is called:
A.
B.
C.
D.
23.  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.
24.  The purpose of a dated decay curve is to:
A.
B.
C.
D.
25.  L5X & Gamma rays differ in that the gamma ray is actually a particle of matter that has both mass and weight
A.
B.
26.  The term used to describe the loss of excess energy by the nucleus of radioactive atoms is called:
A.
B.
C.
D.
27.  L9the fixer solution serves to both remove unexposed silver bromide grains and to harden the emulsion layer
A.
B.
28.  A section with a significant increase in thickness variation is required to be shown on a single radiograph within a desired film density range. This may be accomplished by:
A.
B.
C.
D.
29.  L3 If back scatter is suspected as causing a loss of definiton, a lead letter can be placed between the film and the specimen to indicate possible scattered radiation.
A.
B.
30.  L3Penumbra can be reduced by increasing the source-to-specimen distance.
A.
B.
31.  L5"ion production" can occur when a photon collides with an electron and knocks the electron out of the atom
A.
B.
32.  L5The intensity of an x-ray beam is dependent upon the amount of electrons striking the tungsten target
A.
B.
33.  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.
34.  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.
35.  L5the "bremsstrahlung" process involves the production of ion pairs when one electron collides with another
A.
B.
36.  L9water spots, crimp marks and static marks are all considered to be "artifacts" when they appear on the film
A.
B.
37.  The purpose of fixation is:
A.
B.
C.
D.
38.  L9coarse-grain films are advantageous because they require considerably less time in the developer, stop bath and fixer solutions
A.
B.
39.  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.
40.  The velocity of all electromagnetic radiation is:
A.
B.
C.
D.
41.  To prevent excessive backscatter from reaching a radiographic film, one should:
A.
B.
C.
D.
42.  Static marks, which are black tree-like or circular marks on a radiograph, are often caused by:
A.
B.
C.
D.
43.  The duration of an exposure is usually controlled by:
A.
B.
C.
D.
44.  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.
45.  L2When X-ray film is developed, the portion that was exposed to radiation turns dark.
A.
B.
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