Physic 2 Unit 1 HW
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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show | High frequency
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To generate three-phase, six pulse power, at least how many rectifiers are necessary? | show 🗑
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A semiconductor rectifier: | show 🗑
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show | 60 negative pulses per second
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show | 100% for self-rectification
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A rectifier Converts | show 🗑
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show | Electron flows in one direction but not in the other
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If 60Hz AC power if full-wave rectified, output voltage consists | show 🗑
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The current from a common household wall receptacle in the United States is | show 🗑
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show | Electron emission from a heated source
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show | ------>1--------
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show | A greater number of x-rays per cycle
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show | 360
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show | 100%
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High frequency | show 🗑
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show | 13%
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Three phase, twelve pulse | show 🗑
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show | 100%
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Power to the primary side of the high-voltage transformer comes from the | show 🗑
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The output voltage from the autotransformer | show 🗑
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The autotransformer converts | show 🗑
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show | Faradays law
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show | Increase voltage
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show | High-voltage transformer
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The autotransformer has only one | show 🗑
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show | Adjust voltage
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show | kVp meter
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show | line compensation
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The autotransformer can be used to do which of the following? | show 🗑
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In the design of an autotransformer | show 🗑
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show | Requires that constate voltage be supplied to the autotransformer
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show | is required to stabilize voltage
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show | An autotransformer
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show | Increases current
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The filament transformer is usually | show 🗑
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The filament circuit | show 🗑
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The unit mAs | show 🗑
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An exposure technique of 100 mAs at 100 ms compared with 50 mA at 50 ms results in | show 🗑
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The control of the focal spot size depends on | show 🗑
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show | physically located on the control console
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show | milliamperes (mA)
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show | with a turn ratio less than 1
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Which of the following would be correct to use for expressing x-ray tube current? | show 🗑
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show | precision resistors
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show | Electric charge
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A radiographic technique calls for a 50ms exposure, but the exposure control has only fractional notation. Which of the following should be selected? | show 🗑
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show | 20 mAs
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If an x-ray imaging system is operated at 600mA, 50ms, the total mAs will be which of the following? | show 🗑
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show | 1/20s
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operation at 300mA for 1/20 s is equivalent to operation at 900 mA for | show 🗑
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The control of exposure time always | show 🗑
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show | be electric
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show | can use an ionization chamber between the patient and the image recpyor
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show | A back up timer is required
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show | 8 ms
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Mammography sometimes requires exposures as long as 1.5s.This is equivalent to which of the following? | show 🗑
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show | 1/1000
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There are 30 video frames each seconds for a fluoroscopic CRT dynamic image. What is the length for each frame? | show 🗑
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show | 200ms
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show | 250ms
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show | diode rectifier
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show | Amplitude
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show | None
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Which of the following is higher for a single-phase high voltage generator than for a three-phase high voltage generator? | show 🗑
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show | High capital cost
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show | its limited exposure time
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show | Produces twice as much radiation if full-wave rectified than if half wave rectified
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Full wave rectification | show 🗑
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show | can be a semiconductor
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Concerning the transformer used in the x-ray circuit | show 🗑
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show | increased x-ray intensity per mAs
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show | Electrical insulation
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Which power supply should provide the highest quality x-ray beam? | show 🗑
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show | 100%
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half wave rectified power | show 🗑
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high frequency power | show 🗑
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show | 13%
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Three phase 12 pulse power | show 🗑
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