Question

2% SECTION I Principles of Radiation t, when passed SUMMARY- cont'd transformes, becc s the The aand the electronic times is the most sop H chamber thar is placed betwen located in change). In the United States the olectricity The relatiomshi been volage, current, timer is genes enargh Om's l,which sas that the terminates exposire (ske a timer (otape) across the sotall circuit or a part e hatnqual to the current (amperes) va of the c n ustor deyvads on the manerial,length troas that allo free ow of electricity insulators haveno f clectrons and are very poor s of ele ricity to terminase exposure. Solid-state rectifier banknged to route tim,in process is called . This pr effect "converting AC a conductor, i urons, whether in space or in By combining three single-paase wavefo moving magnetic field can create an electric curreat Current may be induced to flow Placing i in comtiig a charged objest by shrough the x-ray tub me way each ure are two parts of the same basic foroe. That is, any low of electrons, whether in space oe in s created and the percentage of ripple in the agnctic field. Likewis,a wer i form is reduced. Through the use of high erating console, he or she is adjasting this rhsa thus the amount of resistance in the fila and altimately the amouut of current applied to the flame in the x ta tubc un higher the mA station number. lower the res in a conductor by moving erators, this ripple is reduced further seill Giekd or by placing theWhen the radiographer adjusts milliamperage on the filament circuit, and or in a meving magaetic field. There are two to the soep- x-ray tube. lament cic events through the primary and lows from the autotransformer r, through the rectifiers, to the sequence of events through the lows from the autotransformer sse thethrough the o to the step-down transformer, and the selected filament within the cathode of the x-tv tube. Both halves of this sequence happen simultancously to set up the environment in the x-ray tube that produces primarl, the secuidary ciuuli, aed Ge amentto circuit The rauagrapher coatrols the autotransformer through the kVp selector of the operating console, which creates a I CRITICAL THINKING QUESTIONS 1. What are the sequences of events through the primary, secondary, and filament sections of the x-ray circuit when a set of exposure factors are selected 2. How is dlectricity manipulated and used in an x-tm machine to ultimately produce x-rays? REVIEW QUESTIONS I. An x-ray tube is an example of current flow in a/an: 3. Which of the following is Coulomb's law? a. Like charges repel, unlike charges attract c. metallic conductor b. Electrostatic force between charges is directly proper- d. ionic solution tional to product of quantities and inversely propor charges reside only on the external surface of d. Only positive charges can move in solid conductors. 2. Which of the following increases or decreases voltage by a c.Electric tional to square of distance between them. fixed amount a. capacitor b. rheostat c diode d.

Answer 1