What are the three main components of the imaging system? - Answers 1) Tube
2) Operating console
3) High voltage generator
What does the operating system do? - Answers It controls the quality and quantity of the x-ray beam
What does the high voltage generator contain? - Answers The step up transformer, the step down
transformer, and the rectification circuit
What portion of the operating console controls current? - Answers mA settings
What portion of the operating console controls voltage? - Answers kVp settings
Other than current and voltage what else dies the operating console control? - Answers Exposure time
and line compensation
Why do electric circuits and meters connected to the operating console operate at low voltages? -
Answers To minimize possible shock hazards
Each operating console varies based on what? - Answers Computer technology
What is the most common amount of voltage that an imaging system can work on? - Answers 220 volts
What other two voltages can some imaging systems work at? - Answers 110 volts or 440 volts
Due to electric companies not being able to supply 220 volts continuously and accurately how much can
the voltage supplied to an imaging system vary? - Answers +/- 5%
What happens to the quality of the x-ray beam and the quality of the image because of this variation? -
Answers A large variation of x-ray beam quality and inconsistent quality of images
What does the line voltage compensator do? - Answers Measures the voltage provided to the x-ray
imaging system and adjusts the voltage to 220 volts consistently
What is another term used for the autotransformer? - Answers The orchestrator
Where is the autotransformer found? - Answers It is found in the operating console
What is the autotransformer responsible for? - Answers For accepting, controlling, and delivering low
voltage power to the high voltage/ step-up transformer
What is the usual input of voltage provided to the autotransformer? - Answers Usually 220 volts
what is the usual output of the autotransformer? - Answers Usually controlled between 100-400 volts
depending on the design
, What is the maximum output from the auto transformer? - Answers 3-4 times the original input
An autotransformer has only ____ core with ____ winding and many connections along the winding. -
Answers one; one
Which connections are responsible for conducting the input power? - Answers Primary connections
Which connections serve to increase or decrease the voltage, depending on where they are located
along the winding? - Answers Secondary connections
The autotransformer is the only type of transformer to work on what? - Answers Electromagnetic self
induction
The voltage exiting the autotransformer varies between ____ - ____ depending on what is set by the
radiographer on the operating console. - Answers 100 volts; 400 volts
What do the taps in a transformer do? - Answers They direct where the voltage goes
What is the autotransformer law? - Answers Number of turns on secondary side/number of turns on the
primary side = voltage on the secondary side/voltage on the primary side = current on the primary
side/current on the secondary side
Voltage and turns ration have what type of relationship? - Answers A directly proportional relationship.
As one increases so does the other
current and voltage have what type of relationship? - Answers An inversely proportional relationship. As
one increases the other must decrease
The autotransformer law is the same as what other law? - Answers The transformer law
If there are 800 windings between the primary connection AA and 110 volts supplied to the primary
side, how much voltage is supplied to the secondary connections if there are 1600 windings on the
secondary side? - Answers Number of windings on secondary side/number of windings on primary side =
voltage on secondary side/voltage on primary side
1600/800 = x/110
2 = x/110
220 = x
Some operating console models have two selectors for kVp, what are the two selectors for? - Answers
kVp minor and kVp major
Where are the kVp selectors found? - Answers They have a separate series of connections along the
winding of the autotransformer