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All of the following devices are located within the low voltage circuit & control console except
a. step up transformer b. kilovolt control c. exposure switch d. autotransformer
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the autotransformer's primary purpose is to vary the ______________? A. voltage B. amperage C. exposure time D. high frequency
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Chap 6, Xray circuit

X-ray Circuit and Tube heat mgmt

QuestionAnswer
All of the following devices are located within the low voltage circuit & control console except a. step up transformer b. kilovolt control c. exposure switch d. autotransformer a. kilovolt control
the autotransformer's primary purpose is to vary the ______________? A. voltage B. amperage C. exposure time D. high frequency A. voltage
Which transformer is located in the filament circuit? A. rectifier B. step up transformer C. step down transformer D. Autotransformer C. Step down transformer
The primary purpose of the filament circuit is to ______________. Heat the x-ray tube filament for thermuonic emission
A timer that is capable of producing ultrashort exposure times is typical of an ___________ electronic timer
The primary purpose of the high-voltage circuit is to B. supply the x-ray tube w/voltage high enough to produce x-rays
the advantages of using a high freq generator instead of a single-phase generator include: a.produces x-rays more efficiently B. requires less exposure time to produce a given amt of exposure technique C. producing the greatest amt of x-rays for the same exposure time D. all the above ALL correct
how much can the exposure time be decreased when using 3-phase x-ray equipment? A. 20% B. 30% c. 40% d. 50% - 60% C 40%
Automatic exposure control AEC automatically varies the __________. A. mA B. kVp C. exposure time D. mA and kVp C. exposure time
If the automatic exposure control fails during the exposure, the ___________ will terminate the exposure. A. rectifier B. high-voltage circuit C. filament circuit D. back-up timer D back-up timer
which of the following steps should be used to extend the life of the tube? 1. warm up anode 2. Use high mA settings 3. do not make repeated exposures near the tube limits.
what does APR stand for? anatomically programmed radiography
what measures voltage output from the transformer kVp Meter
what is a line voltage compensator? it adjusts the control or fluctuation in the electric supply
mA selector is called a ____________?Change A/C to D/C Rheostat
what is the electronic timer? a timer that is capable of producing ultrashort exposure times
What is the purpose of the rectifier?
How much can the exposure time be decreased when using three-phase x-ray equipment? 40-50%
What does AEC automatically vary? exposure time
If the AEC fails during the exposure, what unit will terminate the exposure? back-up timer
How can you extend the x-ray tube life? Warm up the anode, do not make repeated exposures near the tube limits
The Low Voltage circuit contains: Autotransformer, line Voltage Compensator kVp Meter, Exposure timer, line meter
the Filament circuit contains: mA selector, Rheostat, Step-down tx, Focal Spot selector
the high voltage circuit contains ______________. Rectifier unit, X-ray tube, miliammeter
The primary purpose of the autotransformer is __________. serve as the kilovoltage selector
mA selector on the control panel represents what? Rheostat in the filament circuit
What is the nane of the device that is used to provide retification? Diode
Name 3 transformers in an X-ray machine autotransformers, Step down transformer, High voltage transformer
Created by: aprilstreet
 

 



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