BASIC X-RAY MACHINE OPERATOR
EXAM 2025
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 - Precise Answer ✔✔1,2,3
The oldest and largest radiologic science professional organization is the: - Precise Answer ✔✔American
Society of Radiologic Technologists (ASRT)
The organization that sets standards and prepares examinations necessary to certify radiologic
technologists and limited operators is the: - Precise 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: -
Precise Answer ✔✔Remnat radiation
The term used to describe radiation that is absorbed by matter is: - Precise Answer ✔✔Attenuation
The "unseen" image that is contained in the image receptor (IR) before it is processed is called the: -
Precise 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. - Precise Answer ✔✔Scattered
The radiation that exits the x-ray tube and travels in-air to the patient is called: - Precise Answer
✔✔Primary
,The boxlike device attached under the tube housing that allows the limited operator to vary the size of
the radiation field is called the: - Precise 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: - Precise Answer ✔✔Central Ray
An exposure time of 0.02 seconds is equal to how many milliseconds? - Precise Answer ✔✔20 msec
The number 9 squared is equal to: - Precise Answer ✔✔81
The number 4 is the square root of: - Precise Answer ✔✔16
When 62 kVp is increased by 30%, the result is approximately: - Precise Answer ✔✔81
When the fraction 7/8 is converted to a decimal, the result is: - Precise Answer ✔✔0.875
When 230% is expressed as a decimal, the result is: - Precise 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 - Precise Answer ✔✔50 mAs
X-rays have electromagnetic energy. The velocity (or speed) of this energy travels at a speed of: - Precise
Answer ✔✔186,000 miles per second
The smallest possible unit of electromagnetic energy is the: - Precise Answer ✔✔Photon
The electrical current flowing in an x-ray tube is measured in: - Precise Answer ✔✔Milliamperes
The force or strength of the electron flow in an electrical current is measured in: - Precise Answer
✔✔Kilovoltage
, The device used to produce the high voltage needed for x-ray production is called the: - Precise Answer
✔✔Transformer
In radiology, 80,000 volts is converted to: - Precise Answer ✔✔80 kVp
The target and the filament in the x-ray tube are made of: - Precise Answer ✔✔Tungsten
Electrons are made available in the filament of the x-ray tube by a process called: - Precise Answer
✔✔Thermionic emission
The anode in x-ray tubes rotates at a high rpm to: - Precise Answer ✔✔Dissipate the heat
The target in the x-ray tube is angled to affect the:
1. heat capacity
2. number of photons
3. sharpness of the image - Precise Answer ✔✔1 and 3
Which of the following would be a common small focal spot size in an x-ray tube? - Precise Answer
✔✔0.6 mm
What size of target angle is required for the radiation to cover a
14-in x 17-in IR at a distance of 40 inches? - Precise Answer ✔✔12 degrees
The intensity of the x-ray beam is greatest at the: - Precise Answer ✔✔Cathode end of the beam
The penetrating power of the x-ray beam is controlled by varying the: - Precise Answer ✔✔kVp
If the mA is doubled, the x-ray photons emitted from the tube: - Precise Answer ✔✔Double
EXAM 2025
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 - Precise Answer ✔✔1,2,3
The oldest and largest radiologic science professional organization is the: - Precise Answer ✔✔American
Society of Radiologic Technologists (ASRT)
The organization that sets standards and prepares examinations necessary to certify radiologic
technologists and limited operators is the: - Precise 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: -
Precise Answer ✔✔Remnat radiation
The term used to describe radiation that is absorbed by matter is: - Precise Answer ✔✔Attenuation
The "unseen" image that is contained in the image receptor (IR) before it is processed is called the: -
Precise 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. - Precise Answer ✔✔Scattered
The radiation that exits the x-ray tube and travels in-air to the patient is called: - Precise Answer
✔✔Primary
,The boxlike device attached under the tube housing that allows the limited operator to vary the size of
the radiation field is called the: - Precise 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: - Precise Answer ✔✔Central Ray
An exposure time of 0.02 seconds is equal to how many milliseconds? - Precise Answer ✔✔20 msec
The number 9 squared is equal to: - Precise Answer ✔✔81
The number 4 is the square root of: - Precise Answer ✔✔16
When 62 kVp is increased by 30%, the result is approximately: - Precise Answer ✔✔81
When the fraction 7/8 is converted to a decimal, the result is: - Precise Answer ✔✔0.875
When 230% is expressed as a decimal, the result is: - Precise 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 - Precise Answer ✔✔50 mAs
X-rays have electromagnetic energy. The velocity (or speed) of this energy travels at a speed of: - Precise
Answer ✔✔186,000 miles per second
The smallest possible unit of electromagnetic energy is the: - Precise Answer ✔✔Photon
The electrical current flowing in an x-ray tube is measured in: - Precise Answer ✔✔Milliamperes
The force or strength of the electron flow in an electrical current is measured in: - Precise Answer
✔✔Kilovoltage
, The device used to produce the high voltage needed for x-ray production is called the: - Precise Answer
✔✔Transformer
In radiology, 80,000 volts is converted to: - Precise Answer ✔✔80 kVp
The target and the filament in the x-ray tube are made of: - Precise Answer ✔✔Tungsten
Electrons are made available in the filament of the x-ray tube by a process called: - Precise Answer
✔✔Thermionic emission
The anode in x-ray tubes rotates at a high rpm to: - Precise Answer ✔✔Dissipate the heat
The target in the x-ray tube is angled to affect the:
1. heat capacity
2. number of photons
3. sharpness of the image - Precise Answer ✔✔1 and 3
Which of the following would be a common small focal spot size in an x-ray tube? - Precise Answer
✔✔0.6 mm
What size of target angle is required for the radiation to cover a
14-in x 17-in IR at a distance of 40 inches? - Precise Answer ✔✔12 degrees
The intensity of the x-ray beam is greatest at the: - Precise Answer ✔✔Cathode end of the beam
The penetrating power of the x-ray beam is controlled by varying the: - Precise Answer ✔✔kVp
If the mA is doubled, the x-ray photons emitted from the tube: - Precise Answer ✔✔Double
