Basic X-Ray Machine operator Exam ||Verified Exam!!||
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The boxlike device attached under the tube housing that
allows the limited operator to vary the size of the radiation
field is called the: - Answer-Collimator
An invisible line in the center of the x-ray beam and
perpendicular to the long axis of the x-ray tube is called
the: - Answer-Central Ray
An exposure time of 0.02 seconds is equal to how many
milliseconds? - Answer-20 msec
The number 9 squared is equal to: - Answer-81
The number 4 is the square root of: - Answer-16
When 62 kVp is increased by 30%, the result is
approximately: - Answer-81
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When the fraction 7/8 is converted to a decimal, the result
is: - Answer-0.875
When 230% is expressed as a decimal, the result is: -
Answer-2.3
A radiographic image is made using 500 mA, 0.1 sec., 80
kVp, and
48-inches SID. The value of the mAs for this exposure is -
Answer-50 mAs
X-rays have electromagnetic energy. The velocity (or
speed) of this energy travels at a speed of: - Answer-
186,000 miles per second
The smallest possible unit of electromagnetic energy is
the: - Answer-Photon
The electrical current flowing in an x-ray tube is measured
in: - Answer-Milliamperes
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The force or strength of the electron flow in an electrical
current is measured in: - Answer-Kilovoltage
The device used to produce the high voltage needed for x-
ray production is called the: - Answer-Transformer
In radiology, 80,000 volts is converted to: - Answer-80 kVp
The target and the filament in the x-ray tube are made of: -
Answer-Tungsten
Electrons are made available in the filament of the x-ray
tube by a process called: - Answer-Thermionic emission
Which of the following would be considered a
characteristic of x-rays?
1. have no mass
2. are electrically neutral
3.travel in straight lines - Answer-1,2,3
The oldest and largest radiologic science professional
organization is the: - Answer-American Society of
Radiologic Technologists (ASRT)
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The organization that sets standards and prepares
examinations necessary to certify radiologic technologists
and limited operators is the: - Answer-American Registry
of Radiologic Technologists (ARRT)
The radiation that exits the opposite side of the patient to
expose the image receptor (IR) is called: - Answer-Remnat
radiation
The term used to describe radiation that is absorbed by
matter is: - Answer-Attenuation
The "unseen" image that is contained in the image
receptor (IR) before it is processed is called the: - Answer-
Latent image
The radiation that exits the body in all directions and
causes unwanted exposure on the image receptor (IR) as
well as anyone who is in the room is called __________
radiation. - Answer-Scattered