Physics module 6
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| show | That part of the x-ray equipment's circuitry that increases the supplied 220 volts to the level necessary for producing x-rays in conjunction with the secondary circuit
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| show | The x-ray tube circuit that increases the voltage to the kilovoltage needed to produce x-rays. It also rectifies the current from AC to DC as is needed for powering the x-ray tube. The tube itself is also considered part of the secondary circuit.
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| Filament circuit | show 🗑
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| show | A device that acts in the same manner as a fuse. Circuit breakers protect against short circuits and shock hazards.
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| Autotransformer | show 🗑
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| Timer circuit | show 🗑
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| Step-up transformer | show 🗑
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| Transformer | show 🗑
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| show | A device that incorporates a meter to measure the voltage provided to the x-ray imaging system and a control to adjust that voltage to precisely 220V
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| mA meter | show 🗑
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| Rectifiers | show 🗑
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| X-ray tube | show 🗑
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| show | An appliance for regulating the resistance and thus controlling the amount of current entering an electric circuit
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| Step-down transformer | show 🗑
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| show | The unit of measurement (abbreviated as V) for electric potential; the difference in electric potential between two points
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| show | The type of current in which electrons alternate direction of flow as the electric potential switches back and forth
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| Current | show 🗑
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| show | The phenomenon in which a current in one conductor induces a current to flow in another conductor.
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| show | The principle that there is a direct proportion between the ratio of wire turns and the ratio of voltage
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| show | The highest kilovolt (kV) value at which an x-ray exposure will be made; an adjustment the radiographer makes at the x-ray machine console
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| kVp setting | show 🗑
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| show | Current measured in milliamps (mA) is one of three variables the radiographer adjusts on the control panel when making an x-ray exposure.
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| With which transformer type would a radiographer be more interested in the output current? | show 🗑
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| Which transformer generally serves as the kVp selector? | show 🗑
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| show | 3000 (25 x 120)
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| show | About 500 times
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| show | The positively charged disc at one end of a vacuum tube; the disc in an x-ray tube, positively charged relative to the cathode; electrons from the cathode strike the tungsten target of the anode and produce x-rays
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| Cathode | show 🗑
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| show | A substance that does not conduct electric current because its electrons are bound within the molecules and cannot freely move.
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| Solid-state rectifier | show 🗑
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| Semi-conducting crystals | show 🗑
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| show | A semiconductor based on a silicon lattice, which has boron atoms mixed in place of some of the silicon atoms. Since boron atoms have only three electrons in each of their outer shells, there is now a "hole" where an electron is missing.
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| show | A semiconductor with a few free electrons in its lattice. It can be made by combining silicon, which has four electrons in its outer shell, with phosphorus, which has five electrons in its outer shell. The fifth phosphorus electron is free to move
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| Solid-state diode | show 🗑
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| Full-wave rectification | show 🗑
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| show | The generation of three simultaneous voltage waveforms out of step with one another, thus never dropping the voltage to zero during exposure.
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| show | An X ray generator providing a nearly constant high voltage waveform for the X ray tube
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| Electrons flow in which direction in relation to the solid-state rectifier symbol? | show 🗑
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| show | High frequency
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| show | 4
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| Which type of current is necessary for rectifiers to operate? | show 🗑
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| Resistance | show 🗑
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| Resistors | show 🗑
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| Exposure timer | show 🗑
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| Synchronous timer | show 🗑
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| show | A precision device designed to drive a shat at precisely 60 revolutions per second synchronous motor
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| Electronic timer | show 🗑
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| mAs timer | show 🗑
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| Automatic exposure control (AEC) | show 🗑
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| show | A device used in radiology and photography to control the exposure interval by terminating the exposure when the amount of incident radiation or light reaches a preset quantity
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| show | A device for measuring ionizing radiation by the measurement of the ionization of the gas contained in the chamber
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| show | The process of turning an atom into an ion by adding or removing an electron. In either case, the change in the number of electrons changes the electrical charge of the atom.
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| The lower the mA station number the greater the resistance in a filament circuit. T or F | show 🗑
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| Which exposure timer has the patient as the variable? | show 🗑
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| show | Electronic timer
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| show | The part of the target of an x-ray tube which is bombarded by the focused electron stream when the tube is energized
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| Self induction | show 🗑
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| Focusing cup | show 🗑
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| The filament circuit controls what part of the x-ray tube? | show 🗑
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| show | Autotransformer
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| show | Anode
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| show | Rectifier
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| show | Fluctuating magnetic field
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| show | Mutual induction
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| show | One coil serving as both primary and secondary
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| The step-up transformer serves what purpose in the general x-ray circuit? | show 🗑
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| A step-down transformer is used in the filament current for what purpose? | show 🗑
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| show | 360 (vS/120=90/30)
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| show | 100 (200/20=Ns/10)
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| Why are rectifiers necessary in the general x-ray circuit? | show 🗑
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| Which of the following accurately describes the solid-state rectifier? | show 🗑
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| show | With the direction of the arrow of the solid-state rectifier
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| show | 100%
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| show | Single-phase half wave
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| show | Resistance
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| The technologist has direct control of the resistance in the filament circuit through which setting on the control panel? | show 🗑
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| Which of the following technique settings will have the highest resistance in the filament circuit? | show 🗑
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| Why are rheostats necessary in the x-ray production process? | show 🗑
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| The exposure timer serves what purpose in the general x-ray circuit? | show 🗑
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| show | Synchronous timer
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| show | Primary and secondary
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| Which component serves to route electricity through the x-ray tube in the same direction each time? | show 🗑
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| Which component increases voltage about 500 times? | show 🗑
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Created by:
volcomgrl12