DEH 203 Word Scramble
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| Question | Answer |
| to produce a larger quantity of electrons for the production of x-rays, the radiographer would increase the fallowing | mA (milliamperae) |
| which term describes the electrical pressure or force that drives the electric current through the circuit of the x ray tube? | Voltage |
| the process of heating the cathode wire filament until red hot and electrons are boiled off is termed | thermionic emission |
| which metal is used for the target in the x-ray | Tungsten |
| what percent of the kinetic energy inside the x-ray tube is converted into x-rays | 1% |
| Of the following exposure variables which controls the penetrating power of the x-ray beam | kilovoltage |
| While pressing the exposure button the radiographer seller Will hear an audible beep indicating that | x ray are being generated |
| The step down transformer is located | in the cathode circuit (think of cathode and anode as grades... C is - compared to A) |
| TRUE OR FALSE The metal used for the target within the x-ray tube in modern x-ray tube satisfies all of the properties in an ideal target material | FALSE |
| TRUE OR FALSE? The focal spot improves definition by concentrating electrons into a very small area? | TRUE |
| TRUE OR FALSE? The actual focal spot is rectangular and serves to allow for greater dissipation of the heat generated | TRUE |
| TRUE OR FALSE? X-rays are produced in a series of bursts or pulses rather than as a steady stream | TRUE |
| TRUE OR FALSE when a cathode electron has a head on or glancing collision with a target Adam characteristic radiation is produced | FALSE |
| TRUE OR FALSE characteristic radiation only occurs at or above a Kilovoltage peak of 70 | TRUE |
| TRUE OR FALSE the focusing cup of the x-ray tube is made of Molybdenim | TRUE |
| List the four properties of an ideal target material | 1) high atomic number 2) high melting point 3) higher amount of thermal conductivity 4)low vapor pressure |
| Identify two types of radiation produced within the Xtreme machine | General and characteristic |
| TRUE OR FALSE Milliamperage determines the speed by which the electrons travel to the target | FALSE |
| TRUE OR FALSE the dental x-ray tube is self rectified? | TRUE |
| TRUE OR FALSE the effective focal spot serves to enhance image sharpness | TRUE |
| TRUE OR FALSE A step down transformer has more wire coils in the secondary coil than the primary coil | FALSE |
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