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ARRT Test Prep Exam 2024 | ARRT Prep Exam 2024 Questions and Correct Answers Rated A+
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ARRT Test Prep Exam 2024 | ARRT PrepExam 2024 Questions and Correct
Answers Rated A+
High-velocity electrons (e-) that completely avoid the orbital electrons
as they pass through a tungsten atom, yet come close enough to the
nucleus of the atom to come under the influence of its positively
charged electric field (P+), will produce what type of xrays? -
ANSWER-Bremsstrahlung X-rays
What is the relationship of LET and biological damage? -ANSWER-
They increase in direct proportion
The quantity of radiation exposure measured by an ionization
chamber would be? -ANSWER-Coulomb/Kilogram
What is the smallest particle of an element that retains the
characteristics of the element?
A. Mole
B. Atom
C. Molecule
D. Quark -ANSWER-B
What is atomic mass?
A. The number of protons plus the number of neutrons
B. The number of photons
C. The number of electrons
D. The number of protons plus the number of electrons -ANSWER-A
X-rays travel as bundles of energy called:
,A. energy waves.
B. phasers.
C. electromagnetic bursts.
D. photons. -ANSWER-D
The height of a sine wave is called:
A. photonic height.
B. altitude.
C. amplitude.
D. wavelength. -ANSWER-C
The number of x-ray waves passing a given point per unit time is
called:
A. wavelength.
B. photonic frequency.
C. urgency.
D. frequency. -ANSWER-D
What transformer operates on the principle of self-induction?
A. Step-up transformer
B. Self-induced transformer
C. Induction transformer
D. Autotransformer -ANSWER-D
How short of an exposure is possible with electronic timers?
A. 1/10 second
B. 1/1000 second
C. 1 microsecond
D. 1 megasecond -ANSWER-B
What device may be used to ensure consistency of radiographic
quality from one exposure to the next?
,A. Electronic timer
B. Step-up transformer
C. Automatic exposure control
D. High-frequency generator -ANSWER-C
When a predetermined level of ionization is reached in the ionization
chamber, what does the machine do?
A. The unit shuts off as a result of a malfunction
B. The maximum allowable time has been reached
C. A warning light illuminates
D. The exposure is terminated -ANSWER-D
What type of x-ray machine uses a continually decreasing mA for the
shortest times possible?
A. Ionization chamber
B. Portable
C. C-arm
D. Falling load generator -ANSWER-D
An x-ray machine that makes maximum use of heat loading potential
uses a(n):
A. ionization chamber.
B. phototimer.
C. automatic exposure control (AEC).
D. falling load generator. -ANSWER-D
What components of the x-ray circuit operate on the principle of
mutual induction?
A. Rectifiers
B. Collimators
C. AEC
D. Transformers -ANSWER-D
, What transformer is used in the high-voltage section of the x-ray
circuit?
A. Step-up transformer
B. Autotransformer
C. Step-down transformer
D. Rectifying transformer -ANSWER-A
The device in the x-ray circuit that changes AC to DC is the:
A. autotransformer.
B. step-up transformer.
C. rectifier.
D. falling load generator. -ANSWER-C
What type of current is required for proper operation of the x-ray tube?
A. Direct
B. Falling load
C. Alternating
D. Fluctuating -ANSWER-A
Modern rectifiers are made of:
A. silicone-based semiconductors.
B. transistors.
C. cathode ray tubes.
D. silicon-based semiconductors. -ANSWER-D
The result of thermionic emission is a(n):
A. recoil electron.
B. electron cloud.
C. scattered photon.
D. characteristic photon. -ANSWER-B
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