BASIC X-RAY MACHINE OPERATOR
COMPREHENSIVE EXAM 2026 QUESTIONS
AND ANSWERS 100% CORRECT
◉ The oldest and largest radiologic science professional organization is
the. 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.
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
,◉ The radiation that exits the x-ray tube and travels in-air to the patient
is called. 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.
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
◉ 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
◉ 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
◉ The anode in x-ray tubes rotates at a high rpm to. 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. Answer: 1 and 3
◉ Which of the following would be a common small focal spot size in
an x-ray tube?. 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?. Answer: 12 degrees
◉ The intensity of the x-ray beam is greatest at the. Answer: Cathode
end of the beam
COMPREHENSIVE EXAM 2026 QUESTIONS
AND ANSWERS 100% CORRECT
◉ The oldest and largest radiologic science professional organization is
the. 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.
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
,◉ The radiation that exits the x-ray tube and travels in-air to the patient
is called. 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.
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
◉ 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
◉ 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
◉ The anode in x-ray tubes rotates at a high rpm to. 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. Answer: 1 and 3
◉ Which of the following would be a common small focal spot size in
an x-ray tube?. 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?. Answer: 12 degrees
◉ The intensity of the x-ray beam is greatest at the. Answer: Cathode
end of the beam
