Help
Options
Question
What are the 3 components of an x-ray imaging system?
click to flip
Didn't know it?
click below
click below
Knew it?
click below
click below
Don't know
Question
Define resistor
Remaining cards (64)
Know
retry
shuffle
restart
0:00
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
ImgEquip
LP4 PP & Clover learning qs
| Question | Answer |
|---|---|
| What are the 3 components of an x-ray imaging system? | X-ray tube, operating console, & high voltage generator |
| Define resistor | inhibits flow of current through a circuit |
| A step-UP transformer increases/decreases voltage & increases/decreases amperage | INCREASES voltage, & decreases amperage |
| The resistance of electric flow through a circuit is measured in | Ohm |
| Electrical current is measured in units of | Amperes |
| The control panel is High/Low Voltage? | LOW voltage |
| Alternating current comes in at ____cycles per sec which = 1 ____ | 60 cycles per sec, 1 Hertz |
| Which component of the xray circuit must be powered by alternating current in order to function | Transformers |
| What are the 3 types of transformers? | Autotransformer, Step-Up, Step-down transformer |
| What is a single winding with an iron core in the middle | Autotransformer |
| What checks the incoming voltage? | Line monitor |
| What measures voltage and adjusts it to make it precise? | Line compensator |
| The autotransformer is located between the ____ ____ ____ and the _____ ______ transformer | Main power supply, step-up transformer |
| An Autotransformer functions based on the principle of | Self-induction |
| AC(alternating current) is best described as current that alternates between | positive and negative polarity |
| Type of rectifier that's used in the modern xray tube is called | diode |
| Which components of the x-ray tube must receive AC in order to function | Autotransformer, Step-Up transformer, & Step-down transformer |
| Which type of rectification will produce an xray beam with the greatest intensity | Full wave rectification |
| What part in the x-ray system is considered a rhiostat | mA selector |
| In the x-ray circuit rectifiers are located in the | secondary circuit |
| Which timer is the most accurate, most common, and is used for rapid exposure? | Electronic |
| What is the safety feature of the AEC called? | Back up timer- which is set to 1.5 times the original time |
| Step-Up transformer formula | Vs/Vp= Ns/Np |
| Step-Up & Step-down transformers work off | Mutual Induction |
| Step-down transformer formula | Np/Ns=Is/Ip |
| In which circuit is the focal spot selector located | Filament circuit |
| What is the ripple for a 3 phase, High Frequency ? | <1% |
| What controls tube current? | Filament circuit |
| Thyratron is also known as | the density control |
| Define Minimum Response Time | the length of time necessary for the AEC to respond to the ionization and send a signal to terminate the exposure. |
| What MRT do modern AEC's have? | Modern AEC's have a MRT of 0.001 second |
| What is the function of a step-down transformer within the x-ray circuit? | increase current |
| Which device is located within the filament circuit of the xray system? | mA selector |
| The amount of time the kilovoltage potential is applied to the x-ray tube is controlled by which device? | exposure timer |
| In xray tube circuit, amperage must be increased to heat the filament for thermionic emission, which transformer would accomplish an increase in amperage? | Step-down transformer |
| Which technical factor controls the temperature of the cathode filament within the xray tube? | mA |
| The waveform of commercial power supply to the xray circuit is a(n)- | Alternating Current (AC) |
| Type of transformer required to increase the voltage to kilovoltage level required for the production of xrays | Step-Up transformer |
| A transformer is described as having a turns ratio of 40:1, how will this transformer change amperage? | amperage will decrease b/c this is a step-up transformer |
| Advantages of utilizing imaging equipment with minimal voltage ripple in xray tube? | increased xray quantity, increased xray quality, and increased xray penetrability |
| The filament current is controlled by the tech through a device called | Rheostat |
| Within the x-ray circuit, the step-down transformer is located btwn the | mA selector and cathode filament |
| In xray circuit, the rectifiers are located in the | secondary circuit |
| W/in an electrical circuit, term voltage refers to | electrical force creating electron movement in the circuit |
| A transformer with a greater number of turns on the primary side compared to the secondary side would be called a | step-down transformer |
| The autotransformer includes which device | kVp selector |
| Failure of rheostat would result in inability to | modify the filament current |
| Failure of the autotransformer w/in xray tube circuit results in inability to | modify xray tube voltage |
| W/in xray circuit, the rectifiers are located between | step-up transformer & xray tube |
| mAs timer monitors | mAs, shortest time, located on secondary side of HV transformer |
| Synchronous timer syncs exactly to | 60 cycles/sec, minimum exposure time, & it must be reset after each exposure |
| x-ray system operates at ___-___ kVp, and ___-____ mA | 24-150kVp, & 100-1200 mA |
| HV Generator contains which 4 components | 2 Transformers, Rectifiers, mA meter, & Focal spot selector |
| HV Generator provides power 3 ways | single phase, 3 phase, & HF |
| Which device is located in the secondary circuit of x-ray system | x-ray tube |
| The rectification bridges within the x-ray circuit function to modify the electrical power w/in x-ray system by converting | AC (alternating current) to DC (direct current) |
| In order to create a steady flow of highly penetrating x-rays, power arriving at x-ray tube must be | High-Voltage Direct Current (DC) |
| Part of x-ray circuit ensures that electrons flow in only one direction through the x-ray tube? | Rectifiers |
| Within x-ray circuit, rectifiers are positioned btwn the | Step-Up Transformer & x-ray tube |
Created by:
Levanw