Basic X-Ray Machine operator ACTUAL
QUESTIONS AND CORRECT ANSWERS
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 - CORRECT ANSWERS✅✅1,2,3
The oldest and largest radiologic science professional organization is the: - CORRECT
ANSWERS✅✅American Society of Radiologic Technologists (ASRT)
The organization that sets standards and prepares examinations necessary to certify radiologic
technologists and limited operators is the: - CORRECT ANSWERS✅✅American Registry
of Radiologic Technologists (ARRT)
The radiation that exits the opposite side of the patient to expose the image receptor (IR) is
called: - CORRECT ANSWERS✅✅Remnat radiation
The term used to describe radiation that is absorbed by matter is: - CORRECT
ANSWERS✅✅Attenuation
The "unseen" image that is contained in the image receptor (IR) before it is processed is
called the: - CORRECT ANSWERS✅✅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. -
CORRECT ANSWERS✅✅Scattered
The radiation that exits the x-ray tube and travels in-air to the patient is called: - CORRECT
ANSWERS✅✅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: - CORRECT ANSWERS✅✅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: - CORRECT ANSWERS✅✅Central Ray
An exposure time of 0.02 seconds is equal to how many milliseconds? - CORRECT
ANSWERS✅✅20 msec
The number 9 squared is equal to: - CORRECT ANSWERS✅✅81
The number 4 is the square root of: - CORRECT ANSWERS✅✅16
When 62 kVp is increased by 30%, the result is approximately: - CORRECT
ANSWERS✅✅81
When the fraction 7/8 is converted to a decimal, the result is: - CORRECT
ANSWERS✅✅0.875
When 230% is expressed as a decimal, the result is: - CORRECT ANSWERS✅✅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 - CORRECT ANSWERS✅✅50
mAs
X-rays have electromagnetic energy. The velocity (or speed) of this energy travels at a speed
of: - CORRECT ANSWERS✅✅186,000 miles per second
The smallest possible unit of electromagnetic energy is the: - CORRECT
ANSWERS✅✅Photon
The electrical current flowing in an x-ray tube is measured in: - CORRECT
ANSWERS✅✅Milliamperes
, The force or strength of the electron flow in an electrical current is measured in: - CORRECT
ANSWERS✅✅Kilovoltage
The device used to produce the high voltage needed for x-ray production is called the: -
CORRECT ANSWERS✅✅Transformer
In radiology, 80,000 volts is converted to: - CORRECT ANSWERS✅✅80 kVp
The target and the filament in the x-ray tube are made of: - CORRECT
ANSWERS✅✅Tungsten
Electrons are made available in the filament of the x-ray tube by a process called: -
CORRECT ANSWERS✅✅Thermionic emission
The anode in x-ray tubes rotates at a high rpm to: - CORRECT ANSWERS✅✅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 - CORRECT ANSWERS✅✅1 and 3
Which of the following would be a common small focal spot size in an x-ray tube? -
CORRECT ANSWERS✅✅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? - CORRECT ANSWERS✅✅12 degrees
The intensity of the x-ray beam is greatest at the: - CORRECT ANSWERS✅✅Cathode end
of the beam
QUESTIONS AND CORRECT ANSWERS
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 - CORRECT ANSWERS✅✅1,2,3
The oldest and largest radiologic science professional organization is the: - CORRECT
ANSWERS✅✅American Society of Radiologic Technologists (ASRT)
The organization that sets standards and prepares examinations necessary to certify radiologic
technologists and limited operators is the: - CORRECT ANSWERS✅✅American Registry
of Radiologic Technologists (ARRT)
The radiation that exits the opposite side of the patient to expose the image receptor (IR) is
called: - CORRECT ANSWERS✅✅Remnat radiation
The term used to describe radiation that is absorbed by matter is: - CORRECT
ANSWERS✅✅Attenuation
The "unseen" image that is contained in the image receptor (IR) before it is processed is
called the: - CORRECT ANSWERS✅✅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. -
CORRECT ANSWERS✅✅Scattered
The radiation that exits the x-ray tube and travels in-air to the patient is called: - CORRECT
ANSWERS✅✅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: - CORRECT ANSWERS✅✅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: - CORRECT ANSWERS✅✅Central Ray
An exposure time of 0.02 seconds is equal to how many milliseconds? - CORRECT
ANSWERS✅✅20 msec
The number 9 squared is equal to: - CORRECT ANSWERS✅✅81
The number 4 is the square root of: - CORRECT ANSWERS✅✅16
When 62 kVp is increased by 30%, the result is approximately: - CORRECT
ANSWERS✅✅81
When the fraction 7/8 is converted to a decimal, the result is: - CORRECT
ANSWERS✅✅0.875
When 230% is expressed as a decimal, the result is: - CORRECT ANSWERS✅✅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 - CORRECT ANSWERS✅✅50
mAs
X-rays have electromagnetic energy. The velocity (or speed) of this energy travels at a speed
of: - CORRECT ANSWERS✅✅186,000 miles per second
The smallest possible unit of electromagnetic energy is the: - CORRECT
ANSWERS✅✅Photon
The electrical current flowing in an x-ray tube is measured in: - CORRECT
ANSWERS✅✅Milliamperes
, The force or strength of the electron flow in an electrical current is measured in: - CORRECT
ANSWERS✅✅Kilovoltage
The device used to produce the high voltage needed for x-ray production is called the: -
CORRECT ANSWERS✅✅Transformer
In radiology, 80,000 volts is converted to: - CORRECT ANSWERS✅✅80 kVp
The target and the filament in the x-ray tube are made of: - CORRECT
ANSWERS✅✅Tungsten
Electrons are made available in the filament of the x-ray tube by a process called: -
CORRECT ANSWERS✅✅Thermionic emission
The anode in x-ray tubes rotates at a high rpm to: - CORRECT ANSWERS✅✅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 - CORRECT ANSWERS✅✅1 and 3
Which of the following would be a common small focal spot size in an x-ray tube? -
CORRECT ANSWERS✅✅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? - CORRECT ANSWERS✅✅12 degrees
The intensity of the x-ray beam is greatest at the: - CORRECT ANSWERS✅✅Cathode end
of the beam
