Basic X-Ray Machine Operator Certification
Exam| Questions and Answers Verified 100%
Correct
What material is used as the added filter material in x-ray tubes?
Aluminum
What percentage of the total energy applied to an x-ray tube target is converted into x-
rays?
1%
(99% is converted into heat)
The density in the radiographic image is primarily controlled by the:
mA
Which part of the X-ray circuit supplies and controls the heat required by the x-ray tube
for thermionic emission of electrons?
Filament circuit
How many detectors are contained in an automatic exposure control (AEC) device in an x-
ray table?
3
Which of the following is varied automatically when using automatic exposure control
(AEC)?
Exposure time
What 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
, X-ray tubes should undergo the warm-up procedure again after they have been idle for
more than:
1 hour
3 things that will help prolong x-ray tube life?
1. warm up the anode each morning
2. use low mA settings whenever possible
3. use the low-speed rotor whenever possible
Which one of the x-ray generators produces the greatest amount of x-rays for the same
exposure technique?
High-frequency
Radiographic contrast is controlled by the:
kVp
The quantity, or number of photons produced per second during an exposure is controlled
by the:
mA
The variation in tissue densities within the patient is called:
Subject contrast
The overall contrast seen in the radiographic image is referred to as:
Radiographic contrast
What are examples of shape distortion?
foreshortening
elongation
The unsharp edges of a body part are called:
Penumbra
Exam| Questions and Answers Verified 100%
Correct
What material is used as the added filter material in x-ray tubes?
Aluminum
What percentage of the total energy applied to an x-ray tube target is converted into x-
rays?
1%
(99% is converted into heat)
The density in the radiographic image is primarily controlled by the:
mA
Which part of the X-ray circuit supplies and controls the heat required by the x-ray tube
for thermionic emission of electrons?
Filament circuit
How many detectors are contained in an automatic exposure control (AEC) device in an x-
ray table?
3
Which of the following is varied automatically when using automatic exposure control
(AEC)?
Exposure time
What 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
, X-ray tubes should undergo the warm-up procedure again after they have been idle for
more than:
1 hour
3 things that will help prolong x-ray tube life?
1. warm up the anode each morning
2. use low mA settings whenever possible
3. use the low-speed rotor whenever possible
Which one of the x-ray generators produces the greatest amount of x-rays for the same
exposure technique?
High-frequency
Radiographic contrast is controlled by the:
kVp
The quantity, or number of photons produced per second during an exposure is controlled
by the:
mA
The variation in tissue densities within the patient is called:
Subject contrast
The overall contrast seen in the radiographic image is referred to as:
Radiographic contrast
What are examples of shape distortion?
foreshortening
elongation
The unsharp edges of a body part are called:
Penumbra
