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x-ray tube
| Question | Answer |
|---|---|
| Which of the following types of current supplies the x-ray tube? | |
| What effect does adjusting the mA control have on the production of x-rays | |
| When gallium is added to silicon, it becomes a ________________ type semi-conductor | |
| The target of an xray tube is made up of what metal? | |
| A solid state rectifier is primarily made of what substance? | |
| What causes most tube failures? | |
| The energy of Bremsstrahlung photon is: | |
| What is used to determine a safe exposure? | |
| As kV is applied, the electrons are accelerated toward which part of the x-ray tube? | |
| Which of the following will produce the least load on an x-ray tube? | |
| Which of the following is required of a target material in an x-ray tube? | |
| Which of the following increase the penetrating power of the x-ray beam? | |
| When electrons strike the target of an xray tube most of their energy is converted to ____ | |
| Which of the following is the negative terminal of the x-ray tube? | |
| The changing of alternating current to direct current is known as ___________ | |
| What are xray tubes called that have two filament wires? | |
| How many kV is equal to 75,000 V? | |
| The formula, mAXkVpXtime is used to determine what? | |
| What is used to focus the electron stream toward the target anode? | |
| A solid -state rectifier, with an excessive number of electrons, is referred to as what type of semi-conductor? | |
| What type of tubes are used in modern radiographic equipment? | |
| what determines the quantity of electrons that will be accelerated across the x-ray tube? | |
| During thermionic emission, a cloud of electrons surround the filament. What is this electron cloud called? | |
| How fast do high speed anodes rotate? | |
| To determine how fast an x-ray tube will dissipate heat after several exposures, what would be used? | |
| What is the formula for a heat unit in a three-phase, six pulse, x-ray unit? | mA X kVp X time X 1.35 |
| why is an x-ray tube made of pyrex glass? | |
| when electrons strike the anode of an x-ray tube, how much of their energy is converted to x-rays? | |
| Bremsstrahlung interactions may occur only when the incident electron interacts with | |
| From what metal are the filament wires in radiographic tubes made? | |
| What is the apporoximate speed of a normal rotating anode? | |
| What term describes the phenomena where the intensity of the primary radiation is slightly greater at the cathode end of the x-ray tube | |
| At what temperature does an x-ray tube filament exhibit significant thermionic emission? | |
| In which direction do electrons move through an xray tube? | |
| the transition of orbital electrons from outer to inner shell gives rise to: | |
| Almost all of the kinetic nergy of the incident electrons is converted to: | |
| X-rays and gamma both travel at the same: | |
| The l shell can hold a maximum of ______ electrons | |
| Electrical devices that allow current to flow in only one direction are called: | |
| What components of the x-ray tube is a graphite disc having a tungsten-rhenium track at its periphery? | |
| At the end of characteristic cascade, the _________ shell is missing an electron | |
| the principle difference between an x-ray photon and a gamma ray is the | origin |
| characteristic interactions may occur only when the incident electron interacts with | |
| which is the largest portion of the x-ray beam emerging from the target? | |
| The quality of an xray beam refers to? | |
| The energy of a characteristic photon is | |
| During a characteristic interaction, the energy of the incident electron must be ________ the electron it knocks from its orbits | |
| What is a device called that only allows current to flow only in one direction? | |
| What are the swirling currents called that are induced in transformers and produce heat losses? | |
| What type of motor drives the rotating anode? | |
| what is the process of boiling off electrons called? | thermionic emission |
| What type of radiation cannot be produced at a tube potential of less than 70 keV? | characteristic |
| which part of the x-ray tube has the filament wires and focusing cups? | |
| What is the target area called that is struck by electrons? | actual focal spot |
| the mA is a unit of | current |
Created by:
jhill106
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