General X-ray Machine Operator Exam | Verified Exam Questions and
Answers | Latest Updated Study Material 2026
Question:
collimator definition
Answer:
A box-like device attached under the tube
housing that allows the limited operator to vary the size of the radiation field (a variable
aperature)
Question:
detent
Answer:
A mechanism that tends to stop a moving part in a
specific location
Question:
computed radiography (CR)
Answer:
Sometimes called "filmless
systems" which produce images via a digital format using computer technology, eliminating the
need for darkrooms
Question:
image receptor system (IR)
Answer:
Consists of the X-ray film and the
film holder, also known as a cassette
Question:
central ray
Answer:
A line in the center of the X-ray beam and
perpendicular to the long axis of the X-ray tube
,Question:
attenuation
Answer:
the absorption of x-ray beam by matter
Question:
control booth
Answer:
The portion of the X-ray room that is protected
from scatter radiation and safe during exposures
Question:
grid or bucky
Answer:
A device to protect the film from being fogged by
scatter radiation
Question:
remnant (exit) radiation
Answer:
the resulting beam that exits from the
patient and creates image
Question:
tube port
Answer:
An opening in the X-ray tube where X-rays that are
traveling in a useful direction exit
Question:
scatter radiation
Answer:
photons that interact with the body's matter and
travel in a different direction
,Question:
primary radiation
Answer:
The X-ray beam that leaves the tube and is
unattenuated, except by air
Question:
longitudinal
Answer:
Tube motion along the long axis of the table
Question:
transverse
Answer:
Tube motion across the table, at right angles to
longitudinal
Question:
vertical
Answer:
Tube motion up and down, increasing or decreasing the
distance between the tube and the table
Question:
Angle (tilt, roll)
Answer:
Permits angulation of the tube along the
longitudinal axis of the table
Question:
Rotation
Answer:
Allows the entire tube stand to turn on its axis
, Question:
X-Ray tube
Answer:
the source of x-rays
Question:
phosphor material
Answer:
Used in a closed cassette rather than on film
to obtain computed radiography (CR) images
Question:
ceiling support system
Answer:
most common, has 2 sets of rails that
allow for lateral and longitudinal movement, lock and raise and lower to obtain the correct
distances
Question:
floor to ceiling support system
Answer:
Has a single column with rollers
at each end, one attached to the ceiling-mounted rail and the other attached to a floor-mounted
rail
Question:
What are the three parts of the external part of the x-ray tube?
Answer:
support structure, protective housing, and glass or metal enclosure
Question:
What are the internal parts of the x-ray tube?
Answer:
cathode and anode
Answers | Latest Updated Study Material 2026
Question:
collimator definition
Answer:
A box-like device attached under the tube
housing that allows the limited operator to vary the size of the radiation field (a variable
aperature)
Question:
detent
Answer:
A mechanism that tends to stop a moving part in a
specific location
Question:
computed radiography (CR)
Answer:
Sometimes called "filmless
systems" which produce images via a digital format using computer technology, eliminating the
need for darkrooms
Question:
image receptor system (IR)
Answer:
Consists of the X-ray film and the
film holder, also known as a cassette
Question:
central ray
Answer:
A line in the center of the X-ray beam and
perpendicular to the long axis of the X-ray tube
,Question:
attenuation
Answer:
the absorption of x-ray beam by matter
Question:
control booth
Answer:
The portion of the X-ray room that is protected
from scatter radiation and safe during exposures
Question:
grid or bucky
Answer:
A device to protect the film from being fogged by
scatter radiation
Question:
remnant (exit) radiation
Answer:
the resulting beam that exits from the
patient and creates image
Question:
tube port
Answer:
An opening in the X-ray tube where X-rays that are
traveling in a useful direction exit
Question:
scatter radiation
Answer:
photons that interact with the body's matter and
travel in a different direction
,Question:
primary radiation
Answer:
The X-ray beam that leaves the tube and is
unattenuated, except by air
Question:
longitudinal
Answer:
Tube motion along the long axis of the table
Question:
transverse
Answer:
Tube motion across the table, at right angles to
longitudinal
Question:
vertical
Answer:
Tube motion up and down, increasing or decreasing the
distance between the tube and the table
Question:
Angle (tilt, roll)
Answer:
Permits angulation of the tube along the
longitudinal axis of the table
Question:
Rotation
Answer:
Allows the entire tube stand to turn on its axis
, Question:
X-Ray tube
Answer:
the source of x-rays
Question:
phosphor material
Answer:
Used in a closed cassette rather than on film
to obtain computed radiography (CR) images
Question:
ceiling support system
Answer:
most common, has 2 sets of rails that
allow for lateral and longitudinal movement, lock and raise and lower to obtain the correct
distances
Question:
floor to ceiling support system
Answer:
Has a single column with rollers
at each end, one attached to the ceiling-mounted rail and the other attached to a floor-mounted
rail
Question:
What are the three parts of the external part of the x-ray tube?
Answer:
support structure, protective housing, and glass or metal enclosure
Question:
What are the internal parts of the x-ray tube?
Answer:
cathode and anode
