EMR
Al electromagnetic radiations has this in common.
What is Speed?
In an x-ray circuit, when the filament current is increased, this happens to the exposure rate
What is increases?
The type of current sent to (wired into) the radiology department
What is AC current?
The x-ray tube current (the number of electrons crossing from the cathode to anode per second) is measured in_____________
What is mA?
The number of ______________________ emitted by the x-ray tube filament is determined by the temperature of the filament.
What are electrons?
X-rays are electrically neutral and liberate this while passing through matter.
What is heat?
The filament current, serving to heat the filament and provide a source of electrons within the x-ray tube, usually operates at approximately 10 volts and ____________ amperes.
What is 3-5 Amperes?
During operation of the x-ray tube circuit, the effective KV with three-phase x-ray equipment is about ________% of the peak KV.
What is 95%?
In modern x-ray equipment the line voltage is automatically adjusted by a (an)__________
What is an autotransformer?
The real differences of high frequency x-ray generators is that they are ___________ and ________ than 60 Hz high-voltage generators
What is less expensive and more efficient?
The frequency of an x-ray has this relationship to the wavelength
What is inverse?
In an x-ray tube, this is the point WHERE an increase in KV that will NOT produce an increase in mA
Probably the single most important advantage of the three-phase system is the higher tube rating at very_________________ exposure
What is short?
Regardless of the exposure time that is set, there is a safety device built into modern x-ray equipment that automatically terminates the radiographic exposure after about__________ seconds
What is 6 seconds?
High frequency x-ray generators have approximately _______ ripple
What is 1%?
This explains the relationship between the energy and the frequency of a photon.
What is direct relationship?
In an x-ray tube, this determines the number of electrons available to be accelerated across an x-ray tube
What is the filament current?
In modern x-ray equipment, a (an) _________________ automatically adjusts the filament current to maintain constant mA over a wide range of kV settings.
What is a space charge compensator?
High-Frequency x-ray generators produce a nearly constant _________________ waveform.
WHat is voltage?
A variable resistor is called a (an):
What is a rheostat?
Velocity, Amplitude and __________ are the properties of electromagnetic energy.
What is frequency?
In the x-ray circuit, this controls the voltage to the primary side of the step-up transformer?
What is the autotransformer?
In three-phase x-ray equipment, the applied voltage never reaches __________
WHat is zero?
In high-frequency x-ray circuits, full-wave-rectified power at 60 Hz is converted to a higher frequency, usually 500 to ______________________ Hz and is then transferred to high voltage.
What is 25,000?
In an x-ray tube, as the KV goes up, the size of the focal spot
What is decreases?