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If a distance from a source is tripled, the intensity of the beam will be how much of the original?
1/9
If a wavelength increases by 2 what must its frequency decrease by ?
1/2
What is a grid controlled tube?
the tube controls the current, and uses the shortest exposure time possible
What is a falling load generator?
it is when the mA drops
What is going on with the electrons that causes heat?
excitation
What are the three main parts of the x-ray imaging system?
High voltage generator, tube and coperating console
Variations in power coming from the electric Co. are corrected by the ?
line compensator
How many windings does the autotransformer have?
two
The __________________ circuit provides electrons for the x-ray tube current?
filament
The most accurate type of timer is the ___________________ timer?
electrical
The step-up transformer increases voltage _______________ times?
500-1000
The difference in the waveform between the primary and secondary sides of the high voltage transformer is the _________________?
amplitude
Full wave ,rectified, 3 phase units provide a beam that has _____ pulses per second?
360
