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Exam One RAD107

Chapters: 6,7,11,12,13,&14

QuestionAnswer
tube failure causes: most common is vaporized tungsten.
Line focus principle: The size of the effective focal spot decreases as the target angle decreases.
Thermionic emission Thermionic emission at the filament determines the milliamperage across the x-ray tube during an exposure.
In computer language, a byte is 8 bits
The oldest language for scientific, engineering, and mathematical problems is Fortran
Modern day computers use silicon chips to store information.
Which of the following is a measure of x-ray absorption efficiency?: Detective Quantum Efficiency (DQE)
The dynamic range determines the degree of contrast resolution in the image.
Operating console Radiation quantity (x-ray intensity), Radiation quality (penetrability) Provides control for line compensation
X-ray generators single phase: Low penetrability
Three phase Three distinct, overlapping waves keep power constant.
six pulse three phase: Transforms alternating current (waves) into a steady, direct, and continuous voltage, often for specialized, heavy-duty equipment
disadvantages of three phase equipment: The principal disadvantage of a three-phase x-ray apparatus is its initial cost. Higher voltage = safety risk
formula for calculating high voltage generator power: P(kW) = maximum tube current (mA) x voltage (kVp) / 1000
The first component to receive power in the x-ray circuit is the autotransformer
Created by: Gina_d2
 

 



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