RAD 231 Unit 1
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
|
|
||||
|---|---|---|---|---|---|
| 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
🗑
|
Review the information in the table. When you are ready to quiz yourself you can hide individual columns or the entire table. Then you can click on the empty cells to reveal the answer. Try to recall what will be displayed before clicking the empty cell.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
Created by:
Btran573