Basic X-Ray Machine operator Exam Questions and Answers (Verified Answers) Most Recent exam COMPLETE (2026) (Latest Update 2026) UPDATE!!

Basic X-Ray Machine operator Exam Questions
and Answers (Verified Answers) Most Recent
exam COMPLETE (2026) (Latest Update 2026)
UPDATE!!


Which of the following is varied automatically when using automatic
exposure control (AEC)?


ANSWERS: Exposure time


Which of the following can cause too much heat on the anode and
cause it to crack and fail?
1. excessive exposure on a cold tube
2. a rapid series of large exposures
3. mA settings greater than 400 mA


ANSWERS: 1 and 2


X-ray tubes should undergo the warm-up procedure again after
they have been idle for more than:


ANSWERS: 1 hour

,What is the heat unit (HU) of the anode if 200 mA, 0.10 sec., and 80
kVp is used on a single- phase generator?


ANSWERS: 1600


How many heat units (HU) are generated on a high frequency (HF)
generator if an exposure time of 300 mA, 0.12 sec., and 95 kVp is
used?


ANSWERS: 3,420


Which of the following will help prolong the life of an x-ray tube?
1. warm up the anode each morning
2. use low ma setting whenever possible
3. use the low-speed rotor whenever possible


ANSWERS: 1,2, and 3


Which of the following x-ray generators produces the greatest
amount of x-rays for the same exposure technique?


ANSWERS: High-frequency


Radiographic contrast is controlled by the:


ANSWERS: kVp


The quantity, or number of photons produced per second during an
exposure is controlled by the:


ANSWERS: mA

,The variation in tissue densities within the patient is referred to as
the:


ANSWERS: Subject contrast


The overall contrast seen in the radiographic image is referred to as:


ANSWERS: Radiographic contrast


Which of the following are considered a part of shape distortion?
1. magnification
2. foreshortening
3. elongation


ANSWERS: 2 and 3


The unsharp edges of a body part are referred to as the:


ANSWERS: Penumbra


Which of the following would be considered involuntary motion?
1. tremors
2. peristalsis
3. heartbeats


ANSWERS: 1, 2, and 3


Quantum mottle is typically seen on the radiographic image when
using:


ANSWERS: high mA, high kVp techniques

, The primary controlling factor of penetration of x-rays is:


ANSWERS: kVp


The term used in the new digital imaging environment to replace
density is:


ANSWERS: Brightness


The geometric factors that affect the formation of the image are:
1. SID
2. OID
3. Focal spot


ANSWERS: 1, 2, and 3


When using computed radiography (CR), where is the latent image
stored until it is processed?


ANSWERS: In a photostimulable phosphor plate


Digital imaging requires that the exposure technique is accurately
set. Which of the following is the most critical of the exposure
factors?


ANSWERS: kVp


One of the major advantages of using CR or DR systems is the:


ANSWERS: The ability to see images very fast