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.
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| Which of the following principles of rectification produces the maximum efficiencyof x-ray production? | show 🗑
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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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| The voltage ripple associated with various x-rays generators is | show 🗑
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| show | Converts AC to DC
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| In a circuit that contains a single rectifier: | show 🗑
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| show | 120 pulses per second
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| The current from a common household wall receptacle in the United States is | show 🗑
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| Thermionic emission refers to | show 🗑
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| show | ------>1--------
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| show | A greater number of x-rays per cycle
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| How many overlapping pulses are generated in 1s for threes-phase , six pulse power? | show 🗑
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| Full wave length rectified | show 🗑
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| show | 1%
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| show | 13%
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| show | 4%
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| Self-rectified | show 🗑
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| show | Secondary side of the autotransformer
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| The output voltage from the autotransformer | show 🗑
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| The autotransformer converts | show 🗑
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| The autotransformer operates on the principle of | show 🗑
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| The principle purpose of the high voltage transformer is to do which of the following? | show 🗑
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| The voltage supplied to an x-ray imaging system is 220V. The voltage used by the x-ray tube is produced by which of the following? | show 🗑
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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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| Taps on the windings of an autotranformer are used to select which of the following? | show 🗑
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| The autotransformer can be used to do which of the following? | show 🗑
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| show | A single coil serves as both the primary and the secondary coil
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| show | Requires that constate voltage be supplied to the autotransformer
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| Line compensation | show 🗑
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| Which of the following is uded to determine the voltage before exposure? | show 🗑
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| The filament transformer | show 🗑
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| The filament transformer is usually | show 🗑
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| show | Begins at the autotransformer and ends at the filament
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| The unit mAs | show 🗑
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| show | Four times the number of electrons
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| The control of the focal spot size depends on | show 🗑
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| The meter that monitors x-ray tube current is | show 🗑
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| x-ray tube current is usually measured in which of the following | show 🗑
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| The filament transformer is designed | show 🗑
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| show | coulombs/second
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| The design of fixed mA stations requires the use of which of the following | show 🗑
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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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| A radiographic technique calls for a 400 mA, 1/20 s exposure. What is the mAs? | show 🗑
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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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| show | on the primary side of the high-voltage transformers
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| The exposure timer on a three phase radiographic imaging system will | show 🗑
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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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| The shortest exposure possible eith single phase equipment is 1/120 s. How many milliseconds is that? | show 🗑
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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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| show | 33ms
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| show | 200ms
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| show | 250ms
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| Which of the following is contained in a typical high voltage generator? | show 🗑
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| A change in the voltage waveform from the primary side to the secodary side of the high voltage transformer produces | show 🗑
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| show | None
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| show | Voltage ripple
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| show | High capital cost
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| The disadvantage of a self-rectified cicuit is | show 🗑
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| An exposure of 1/10 s | show 🗑
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| Full wave rectification | show 🗑
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| A rectifier | show 🗑
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| show | The high voltage transformer is a step up device
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| Which of the following is an advantage of three phase power over single phase power | show 🗑
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| Oil is used in the high voltage section of an x-ray imaging system for which of the following functions | show 🗑
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| show | high frequency
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| Full wave rectified power | show 🗑
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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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