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Question

Of the following components, which one is the first to receive power in the x-ray circuit?
a. mA meter
b. High voltage transformer
c. Rectifier
d. Autotransformer
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Question

What contitutes the tube current in an x-ray tube?
a. Heat moving through the filament
b. Electrons moving between the electrodes
c. Protons moving between the electrodes
d. X-rays moving between the electrodes
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RAD 231 Unit 1

QuestionAnswer
Of the following components, which one is the first to receive power in the x-ray circuit? a. mA meter b. High voltage transformer c. Rectifier d. Autotransformer d. autotransformer
What contitutes the tube current in an x-ray tube? a. Heat moving through the filament b. Electrons moving between the electrodes c. Protons moving between the electrodes d. X-rays moving between the electrodes b. Electrons moving between the electrodes
What is the purpose of an electrical switch? a. To reduce fire hazards b. To change AC to DC c. To change low voltage to high voltage d. To open and close the circuit d. To open and close the circuit
What is the main advantage of rectifying the current supplied to an xr tube? a. Eliminates heat production b. Eliminates low energy photons from the beam c. Makes the beam have a higher max energy d. Tube can w/stand greater energy loading d. Tube can withstand greater energy loading (i.e., exposure factors)
Which of the following is located between the patient and the image receptor? a. Photomultipler tube b. Ionization chamber c. Thyratron d. mA meter b. Ionization chamber
Which of the following voltage regulating devices is best described as a variable ratio transformer? a. Rheostat b. Autotransformer c. High voltage transformer d. Filament transformer b. Autotransformer
Variations in power distribution to the x-ray machine are corrected by the __________________________. a. Line voltage compensator b. High voltage autotransformer c. Full-wave rectifier d. Automatic exposure control a. Line voltage compensator
The most accurate exposure timer for the shortest exposure time is the: a. Synchronous Timer b. Motor-driven Impulse Timer c. Electronic Timer (Modern Type) d. Mechanical Timer c. Electronic Timer (Modern Type)
The current that is delivered to the Radiology Department is: a. Alternating current b. Steady direct current c. Direct pulsating current a. Alternating current
An x-ray tube operates most efficiently to produce x-rays when supplied by: a. Low voltage AC b. Low voltage DC c. High voltage AC d. High voltage DC d. High voltage DC
The autotransformer operates on the principle of: a. Electrostatic induction b. Electromagnetic mutual induction c. Thermionic emission d. Self-induction d. Self-induction
A variable resistor that can operate on either AC or DC is known as a/an: a. Transformer b. Choke Coil c. Rheostat d. Autotransformer c. Rheostat
A _____________________ temporarily stores an electric charge. a. Battery b. Capacitor c. Rheostat d. Diode b. Capacitor
The ____________________ circuit provides electrons for the x-ray tube current. a. Rectifier b. Autotransformer c. High voltage d. Filament d. Filament
The three main parts of the xr imaging system are the xr tube, ________________, & ________________. a. Protective barrier, tabletop b. Operating console, high voltage generator c. Rectification circuit, operating console d. Crane assembly, tabletop b. Operating console, high voltage generator
The proper operation of a transformer occurs with a/an _______________________ input and a/an _________________________ output current. a. AC, AC b. AC, DC c. DC, AC d. DC, DC a. AC, AC
Created by: Btran573
 

 



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