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physic 6

Quiz yourself by thinking what should be in each of the black spaces below before clicking on it to display the answer.
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Question
Answer
show x-ray tube, operating console, high voltage generator  
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show in the exam room and the operating console in the adjoining room, seperated by a protective barrier  
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Where is a high votage generator located   show
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What does the operating console allow the tech to control   show
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What does the operating console provide   show
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What voltage are electric circuits that connect the meter and controls on the operating console   show
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What does the line voltage compensator measure   show
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What does the line voltage compensator do   show
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What does radiation quantity refer to   show
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show mR/mAs  
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What does radiation quality refer to   show
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show kVp;half-value layer  
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How many windings does a autotransformer have   show
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show precise voltage to the filament circuit and to the high voltage circuit  
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show autotransformer  
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What is the equation for autotransformer law   show
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What does Vp represent? Vs, Np, Ns   show
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show kVp  
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show mAs  
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X-ray tube current is measured in   show
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What determines the number of electrons emitted by the filament   show
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show thermonic emission  
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show filament current  
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what is the cloud of electrons surrounding the filament   show
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show high voltaage setion  
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show step down  
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show synchronous timer  
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most accurate of all timers and allow a wide range of time intervals to be selected and are accurate to intervals as small as 1 ms   show
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what is the device that measures the quantity of radiation that reaches the IR   show
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show falling-load generator  
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on an AEC the electronic back up should be set at what   show
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show step up transformer  
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show rectifier  
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where are rectifiers located   show
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show diodes  
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show high voltage transformer, filament transformer, rectifiers  
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what appears as the voltage waveform supplied to the primary side of the high-voltage transformer, except the amplitude is much greater?   show
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a condition in which the voltage is not allowed to swing negatively during the negative half of its cycle, therefore only flows during the positive cycle   show
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what is responsible for increasing the output voltage from the autotranformer to the kVp necessary for x-ray production   show
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The negative half-cycle corresponding to the inverse voltage is reversed so that the anode is always positive   show
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show exposure time for any given technique is cut in half  
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What is caused by the alternate swing in voltage from zero to maximum potential 120 times each second   show
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show none because of low energy and low penetraility  
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multiple voltage wave forms are superimposed on one another, resulting in a wave form that maintains a nearly constant high voltage,never dropping to 0   show
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what is the disadvantage of three phase power   show
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show 6 pulse, 12 pulse  
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what produces nearly constant waveform improving image, quality and lower pt dose   show
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what are advantages in high frequency generators   show
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what modalities use high frequency generators   show
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during exposure what is responsible for releasing the charge to form the x-ray tube current needed to produce the x-ray   show
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How are transformers and high voltage generators usually identified   show
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what is the lowest power rating of all generators   show
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the_____ voltage rating has the _______ power rating   show
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What is the turn ratio of high voltage transformers   show
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show alternating  
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show diodes  
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show solid state semiconductors  
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how many pulses/sec are produced for half wave rectification   show
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show 120  
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show 360 (6 pulses per 1/60 sec)  
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show filament circuit  
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what is the difference between primary and secondary waveforms   show
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What is the process of converting from ac to dc   show
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what is the means for characterizing voltage waveforms   show
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the _______ voltage ripple, the ________ radiation quantity and quality   show
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show 14% (voltage supplied to tube never falls below 86% of max value)  
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what is the voltage ripple for 3 phase 12 pulse   show
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show 1% (most efficient method of x ray production with the lowest voltage ripple)  
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show 100%  
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