What is the name of the process that changes alternating current into direct current? correct answers Rectification
What is the most accurate type of timer? correct answers Electronic
Where in the x ray circuit is the timer circuitry located? correct answers Between the auto transformer and t...
DMIR 1121 Final || All Correct.
What is the name of the process that changes alternating current into direct current? correct
answers Rectification
What is the most accurate type of timer? correct answers Electronic
Where in the x ray circuit is the timer circuitry located? correct answers Between the auto
transformer and the step up transformer
What is the advantage of three phase equipment over single phase equipment? correct answers
Can achieve shorter exposure times
The spinning top test can be used to determine the accuracy of what? correct answers Timer
Circuit
What device could be used to set the mA on the control panel? correct answers Rheostat
What type of transformer has more turns of wire in the secondary side than in the priary side?
correct answers Step Up
What type of transformer core is most widely used in radiographic equipment? correct answers
Shell Type
If the voltage is stepped up, what happens to the current in the secondary side of the transformer?
correct answers Decreases
As magnetic domains rearrange in a transformer, heat is produced. What is the type of power
loss called? correct answers Hysteresis loss
What is the major reason for using alternating current? correct answers Transformers cannot
work without it
Tapping windings of the autotransformer to supply voltage to the step up transformer is the
purpose of which of these? correct answers kVp selector
What are the swirling currents called that are induced in transformers with iron in the core?
correct answers Eddy Currents
What is the formal name of the voltage that is supplied to the autotransformer? correct answers
Line voltage
A 0.1 second exposure is made on a full-wave rectified, single-phase generator. A spinning top
test should show how many dots? correct answers 12
, Which of the following types of current is necessary to operate the x ray tube? correct answers
Direct
What effect does adjusting the mA have on the production of x rays? correct answers Controls
the quantity
How many rectifiers are needed to produce a single-phase, full-wave rectified current? correct
answers 4
If a full-wave rectified current has 60 cycles per second, how many pulses per second pass
through the x ray tube? correct answers 120
A solid state rectifier is primarily made of which of the following substances? correct answers
Silicon
Why are three-phase and high frequency generators more efficient at producing x rays than
single-phase generators? correct answers Voltage never drops to zero
The target area of an x ray tube is made primarily of what metal? correct answers Tungsten
What causes most x ray tube failures? correct answers Filament evaporation
What type of primary radiation is produced when the x ray tube voltage is below 70 kVp? correct
answers Bremsstrahlung
What type of motor drives the rotating anode? correct answers Induction
Which part of the x ray tube has the filament wires and focusing cup? correct answers Cathode
What will produce the least amount of heat units in the x ray tube? correct answers High kVp,
Low mAs
When electrons strike the target of an x ray tube, most of their energy is converted into what?
correct answers Heat
Which of the following refers to the filtration that is manufactured into the x ray tube? correct
answers Inherent filtration
What is required of a target metal in an x ray tube? correct answers High atomic number and
high melting point
During thermionic emission, a cloud of electrons surround the filament. What is this electron
cloud called? correct answers Space Charge
What causes pitting of the x ray tube target? correct answers Excessive heat build up at the anode
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