BASIC X-RAY MACHINE OPERATOR
EXAM QUESTIONS AND ANSWERS 100%
PASS.
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 - ANS 1,2,3
The oldest and largest radiologic science professional organization is the: - ANS American
Society of Radiologic Technologists (ASRT)
The organization that sets standards and prepares examinations necessary to certify radiologic
technologists and limited operators is the: - ANS American Registry of Radiologic
Technologists (ARRT)
The radiation that exits the opposite side of the patient to expose the image receptor (IR) is
called: - ANS Remnat radiation
The term used to describe radiation that is absorbed by matter is: - ANS Attenuation
The "unseen" image that is contained in the image receptor (IR) before it is processed is called
the: - ANS Latent image
2026 STUDY MATERIAL @COPYRIGHT RESERVED 1
,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. -
ANS Scattered
The radiation that exits the x-ray tube and travels in-air to the patient is called: - ANS 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: - ANS 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: - ANS Central Ray
An exposure time of 0.02 seconds is equal to how many milliseconds? - ANS 20 msec
The number 9 squared is equal to: - ANS 81
The number 4 is the square root of: - ANS 16
When 62 kVp is increased by 30%, the result is approximately: - ANS 81
When the fraction 7/8 is converted to a decimal, the result is: - ANS 0.875
When 230% is expressed as a decimal, the result is: - ANS 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 - ANS 50 mAs
X-rays have electromagnetic energy. The velocity (or speed) of this energy travels at a speed of: -
ANS 186,000 miles per second
2026 STUDY MATERIAL @COPYRIGHT RESERVED 2
, The smallest possible unit of electromagnetic energy is the: - ANS Photon
The electrical current flowing in an x-ray tube is measured in: - ANS Milliamperes
The force or strength of the electron flow in an electrical current is measured in: -
ANS Kilovoltage
The device used to produce the high voltage needed for x-ray production is called the: -
ANS Transformer
In radiology, 80,000 volts is converted to: - ANS 80 kVp
The target and the filament in the x-ray tube are made of: - ANS Tungsten
Electrons are made available in the filament of the x-ray tube by a process called: -
ANS Thermionic emission
The anode in x-ray tubes rotates at a high rpm to: - ANS 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 - ANS 1 and 3
Which of the following would be a common small focal spot size in an x-ray tube? - ANS 0.6
mm
What size of target angle is required for the radiation to cover a
2026 STUDY MATERIAL @COPYRIGHT RESERVED 3
EXAM QUESTIONS AND ANSWERS 100%
PASS.
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 - ANS 1,2,3
The oldest and largest radiologic science professional organization is the: - ANS American
Society of Radiologic Technologists (ASRT)
The organization that sets standards and prepares examinations necessary to certify radiologic
technologists and limited operators is the: - ANS American Registry of Radiologic
Technologists (ARRT)
The radiation that exits the opposite side of the patient to expose the image receptor (IR) is
called: - ANS Remnat radiation
The term used to describe radiation that is absorbed by matter is: - ANS Attenuation
The "unseen" image that is contained in the image receptor (IR) before it is processed is called
the: - ANS Latent image
2026 STUDY MATERIAL @COPYRIGHT RESERVED 1
,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. -
ANS Scattered
The radiation that exits the x-ray tube and travels in-air to the patient is called: - ANS 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: - ANS 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: - ANS Central Ray
An exposure time of 0.02 seconds is equal to how many milliseconds? - ANS 20 msec
The number 9 squared is equal to: - ANS 81
The number 4 is the square root of: - ANS 16
When 62 kVp is increased by 30%, the result is approximately: - ANS 81
When the fraction 7/8 is converted to a decimal, the result is: - ANS 0.875
When 230% is expressed as a decimal, the result is: - ANS 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 - ANS 50 mAs
X-rays have electromagnetic energy. The velocity (or speed) of this energy travels at a speed of: -
ANS 186,000 miles per second
2026 STUDY MATERIAL @COPYRIGHT RESERVED 2
, The smallest possible unit of electromagnetic energy is the: - ANS Photon
The electrical current flowing in an x-ray tube is measured in: - ANS Milliamperes
The force or strength of the electron flow in an electrical current is measured in: -
ANS Kilovoltage
The device used to produce the high voltage needed for x-ray production is called the: -
ANS Transformer
In radiology, 80,000 volts is converted to: - ANS 80 kVp
The target and the filament in the x-ray tube are made of: - ANS Tungsten
Electrons are made available in the filament of the x-ray tube by a process called: -
ANS Thermionic emission
The anode in x-ray tubes rotates at a high rpm to: - ANS 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 - ANS 1 and 3
Which of the following would be a common small focal spot size in an x-ray tube? - ANS 0.6
mm
What size of target angle is required for the radiation to cover a
2026 STUDY MATERIAL @COPYRIGHT RESERVED 3
