ARRT Radiography Exam Review (200-300)
Questions and Correct Solutions
A ________ is used to measure radiation in an area, storage areas for radioisotopes, doses traveling
through barriers, and patients who have radioactive sources within them. - correct answers:Handheld
Ionization Chamber
Handheld ionization chambers can measure exposure rates as low as ________ per hour. - correct
answers:10 µGyᵃ
A ________ is used to detect radioactive particles in nuclear medicine facilities. - correct answers:Geiger-
Mueller Detector
Geiger-Mueller detectors read in ________ per minute. - correct answers:Counts
An autotransformer is also known as a ________ transformer. - correct answers:Variable
An autotransformer is constructed with: - correct answers:A single coil of wire with an iron core.
The autotransformer is the source for selecting ________. - correct answers:kVp
Autotransformers operate on the principle of ________. - correct answers:Self-Induction
The ________ is in the x-ray circuit to indicate the voltage that is selected. - correct answers:Prereading
Voltmeter
The prereading voltmeter is prereading because it indicates the ________ that will be flowing through
the tube once the exposure is made. - correct answers:Kilovoltage
The prereading voltmeter is placed in the circuit between the ________ and the ________. - correct
answers:1) Autotransformer
,2) Step-Up Transformer
A ________ is used to regulate the duration of the x-ray exposure. - correct answers:Timer
The timer is wired in the circuit between the ________ and the ________. - correct answers:1)
Autotransformer
2) Step-Up Transformer
Electronic timers allow exposures as low as ________. - correct answers:1 ms or 1/1000 second.
The ________ provides the safest tube current in the shortest possible time. - correct answers:mAs
Timer
The mAs timer measures the total ________. - correct answers:Tube Current
The mAs timer is located ________ the secondary coil of the step-up transformer. - correct answers:After
The mAs timer is generally used with ________ generators. - correct answers:Falling Load
________ is used to provide consistency of radiographic quality. - correct answers:Automatic Exposure
Control (AEC)
AEC consists of a flat ________ chamber that is located between the ________ and the ________. -
correct answers:1) Ionization
2) Patient
3) Image Receptor
AEC uses a ________ kVp, while the machine controls the ________. - correct answers:1) Fixed
2) mAs
, The shortest exposure time possible with an AEC is ________. - correct answers:1 ms or 1/1000 second.
A ________ is a modern generator that takes advantage of extremely short time capabilities and tube
heat-loading potential. - correct answers:Falling Load Generator
With a falling load generator, the radiographer sets ________ and ________, and the generator
calculates the most efficient method of obtaining the required ________. - correct answers:1) kVp
2) mAs
3) mAs
A ________ transformer consists of primary coils and secondary coils. - correct answers:Step-Up or High-
Voltage
A step-up transformer requires ________ current in order to operate. - correct answers:Alternating
The ________ coil of a step-up transformer receives voltage from the autotransformer . - correct
answers:Primary
Step-up transformers operate on the principle of ________. - correct answers:Mutual Induction
The ________ describes the number of turns in the wire in the primary coil, compared to the number of
turns in the wire of the secondary coil. - correct answers:Turns Ratio
Turns Ratio Formula (Autotransformer Law): - correct answers:
The turns ratio determines how much ________ is stepped-up. - correct answers:Voltage
The ________ the turns ratio, the higher the resulting ________. - correct answers:1) Greater
2) Kilovoltage
Questions and Correct Solutions
A ________ is used to measure radiation in an area, storage areas for radioisotopes, doses traveling
through barriers, and patients who have radioactive sources within them. - correct answers:Handheld
Ionization Chamber
Handheld ionization chambers can measure exposure rates as low as ________ per hour. - correct
answers:10 µGyᵃ
A ________ is used to detect radioactive particles in nuclear medicine facilities. - correct answers:Geiger-
Mueller Detector
Geiger-Mueller detectors read in ________ per minute. - correct answers:Counts
An autotransformer is also known as a ________ transformer. - correct answers:Variable
An autotransformer is constructed with: - correct answers:A single coil of wire with an iron core.
The autotransformer is the source for selecting ________. - correct answers:kVp
Autotransformers operate on the principle of ________. - correct answers:Self-Induction
The ________ is in the x-ray circuit to indicate the voltage that is selected. - correct answers:Prereading
Voltmeter
The prereading voltmeter is prereading because it indicates the ________ that will be flowing through
the tube once the exposure is made. - correct answers:Kilovoltage
The prereading voltmeter is placed in the circuit between the ________ and the ________. - correct
answers:1) Autotransformer
,2) Step-Up Transformer
A ________ is used to regulate the duration of the x-ray exposure. - correct answers:Timer
The timer is wired in the circuit between the ________ and the ________. - correct answers:1)
Autotransformer
2) Step-Up Transformer
Electronic timers allow exposures as low as ________. - correct answers:1 ms or 1/1000 second.
The ________ provides the safest tube current in the shortest possible time. - correct answers:mAs
Timer
The mAs timer measures the total ________. - correct answers:Tube Current
The mAs timer is located ________ the secondary coil of the step-up transformer. - correct answers:After
The mAs timer is generally used with ________ generators. - correct answers:Falling Load
________ is used to provide consistency of radiographic quality. - correct answers:Automatic Exposure
Control (AEC)
AEC consists of a flat ________ chamber that is located between the ________ and the ________. -
correct answers:1) Ionization
2) Patient
3) Image Receptor
AEC uses a ________ kVp, while the machine controls the ________. - correct answers:1) Fixed
2) mAs
, The shortest exposure time possible with an AEC is ________. - correct answers:1 ms or 1/1000 second.
A ________ is a modern generator that takes advantage of extremely short time capabilities and tube
heat-loading potential. - correct answers:Falling Load Generator
With a falling load generator, the radiographer sets ________ and ________, and the generator
calculates the most efficient method of obtaining the required ________. - correct answers:1) kVp
2) mAs
3) mAs
A ________ transformer consists of primary coils and secondary coils. - correct answers:Step-Up or High-
Voltage
A step-up transformer requires ________ current in order to operate. - correct answers:Alternating
The ________ coil of a step-up transformer receives voltage from the autotransformer . - correct
answers:Primary
Step-up transformers operate on the principle of ________. - correct answers:Mutual Induction
The ________ describes the number of turns in the wire in the primary coil, compared to the number of
turns in the wire of the secondary coil. - correct answers:Turns Ratio
Turns Ratio Formula (Autotransformer Law): - correct answers:
The turns ratio determines how much ________ is stepped-up. - correct answers:Voltage
The ________ the turns ratio, the higher the resulting ________. - correct answers:1) Greater
2) Kilovoltage
