RADT 1085 final UPDATED ACTUAL
QUESTIONS and CORRECT Answers
The three main parts of the x-ray imaging system are the x-ray tube, _____, and _____. -
CORRECT ANSWER - operating console, high voltage generator
The x-ray beam generated by the circuit with the _____ voltage ripple has the _____ quantity
and quality. - CORRECT ANSWER - lowest, highest
Alternating current is produced by a __ - CORRECT ANSWER - generator
Which of the following statements regarding transformers is FALSE? - CORRECT
ANSWER - Voltage is increased on the secondary side of a step-down transformer.
n the United States, alternating current goes through a complete cycle every _____ second. -
CORRECT ANSWER - 1/60
Which of the following statements is FALSE? - CORRECT ANSWER - Resistance to
electron flow increases as temperature decreases.
The fundamental unit of electric charge is the - CORRECT ANSWER - coulomb
Which of the following statements is TRUE? - CORRECT ANSWER - All of the above
statements are true.
The negative side of the x-ray tube holds the _____ - CORRECT ANSWER - filament
Which of the following is most used in x-ray imaging systems as high-voltage transformers? -
CORRECT ANSWER - shell-type transformer
,A diode allows electrons to flow from _____. - CORRECT ANSWER - cathode to anode
The force between magnetic poles is proportional to the _____ of the magnetic pole strengths,
divided by the _____ of the distance between them. - CORRECT ANSWER - product,
square
t/f The rectifiers are located on the primary side of the step-up transformer. - CORRECT
ANSWER - false
Electrification occurs through the movement of ____ - CORRECT ANSWER - electrons
only
t/f The kVp meter is located in the high voltage section to give a real-time readout of tube
voltage. - CORRECT ANSWER - false
Thermionic emission at the filament determines the _____ across the x-ray tube during an
exposure. - CORRECT ANSWER - milliamperage
t/f Iron has high magnetic permeability and low magnetic susceptibility. - CORRECT
ANSWER - false
Which of the following terms does NOT belong? - CORRECT ANSWER - half-value
layer
Like charges _____ and unlike charges _____. - CORRECT ANSWER - repel, attract
thermionic emission at the filament creates a _____. - CORRECT ANSWER - space
charge
An electric potential applied to a conductor produces _____. - CORRECT ANSWER -
both A and B
, t/f Filament currents fall in the range of 3-6 amperes, while tube current is usually measured in
milliamperes. - CORRECT ANSWER - true
The operating console contains circuits that are _____. - CORRECT ANSWER - low
voltage only
The _____ is the source of radiation in the x-ray tube. - CORRECT ANSWER - focal spot
t/f The timing circuit is located on the primary side of the high-voltage transformer. - CORRECT
ANSWER - true
Which of the following statements is FALSE? - CORRECT ANSWER - Unrectified
circuits use 100% of the waveform to generate power in the x-ray circuit.
if the AEC backup timer goes off, which of the following could be true? - CORRECT
ANSWER - All of the above could be true.
t/f Amperage through a circuit is controlled by varying resistance. - CORRECT
ANSWER - true
Which of the following is used to ultimately control amperage or current? - CORRECT
ANSWER - rheostats
Which of the following substances would be used as a semiconductor? - CORRECT
ANSWER - silicon
T/f the tube circuit controls potential difference across the tube, while the filament circuit
controls tube current. - CORRECT ANSWER - true
QUESTIONS and CORRECT Answers
The three main parts of the x-ray imaging system are the x-ray tube, _____, and _____. -
CORRECT ANSWER - operating console, high voltage generator
The x-ray beam generated by the circuit with the _____ voltage ripple has the _____ quantity
and quality. - CORRECT ANSWER - lowest, highest
Alternating current is produced by a __ - CORRECT ANSWER - generator
Which of the following statements regarding transformers is FALSE? - CORRECT
ANSWER - Voltage is increased on the secondary side of a step-down transformer.
n the United States, alternating current goes through a complete cycle every _____ second. -
CORRECT ANSWER - 1/60
Which of the following statements is FALSE? - CORRECT ANSWER - Resistance to
electron flow increases as temperature decreases.
The fundamental unit of electric charge is the - CORRECT ANSWER - coulomb
Which of the following statements is TRUE? - CORRECT ANSWER - All of the above
statements are true.
The negative side of the x-ray tube holds the _____ - CORRECT ANSWER - filament
Which of the following is most used in x-ray imaging systems as high-voltage transformers? -
CORRECT ANSWER - shell-type transformer
,A diode allows electrons to flow from _____. - CORRECT ANSWER - cathode to anode
The force between magnetic poles is proportional to the _____ of the magnetic pole strengths,
divided by the _____ of the distance between them. - CORRECT ANSWER - product,
square
t/f The rectifiers are located on the primary side of the step-up transformer. - CORRECT
ANSWER - false
Electrification occurs through the movement of ____ - CORRECT ANSWER - electrons
only
t/f The kVp meter is located in the high voltage section to give a real-time readout of tube
voltage. - CORRECT ANSWER - false
Thermionic emission at the filament determines the _____ across the x-ray tube during an
exposure. - CORRECT ANSWER - milliamperage
t/f Iron has high magnetic permeability and low magnetic susceptibility. - CORRECT
ANSWER - false
Which of the following terms does NOT belong? - CORRECT ANSWER - half-value
layer
Like charges _____ and unlike charges _____. - CORRECT ANSWER - repel, attract
thermionic emission at the filament creates a _____. - CORRECT ANSWER - space
charge
An electric potential applied to a conductor produces _____. - CORRECT ANSWER -
both A and B
, t/f Filament currents fall in the range of 3-6 amperes, while tube current is usually measured in
milliamperes. - CORRECT ANSWER - true
The operating console contains circuits that are _____. - CORRECT ANSWER - low
voltage only
The _____ is the source of radiation in the x-ray tube. - CORRECT ANSWER - focal spot
t/f The timing circuit is located on the primary side of the high-voltage transformer. - CORRECT
ANSWER - true
Which of the following statements is FALSE? - CORRECT ANSWER - Unrectified
circuits use 100% of the waveform to generate power in the x-ray circuit.
if the AEC backup timer goes off, which of the following could be true? - CORRECT
ANSWER - All of the above could be true.
t/f Amperage through a circuit is controlled by varying resistance. - CORRECT
ANSWER - true
Which of the following is used to ultimately control amperage or current? - CORRECT
ANSWER - rheostats
Which of the following substances would be used as a semiconductor? - CORRECT
ANSWER - silicon
T/f the tube circuit controls potential difference across the tube, while the filament circuit
controls tube current. - CORRECT ANSWER - true
