Multiple Choice 29. Which regulates the flow of electrical current to the filament of the x-ray tube? a. high-voltage circuit b. low-voltage circuit c. high-voltage transformer d. low-voltage transformer 30. Which is used to increase the voltage in the high- voltage circuit? a. step-up transformer b. step-down transformer c.autotransformer d. step-up circuit

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Multiple Choice 29. Which regulates the flow of electrical current to the filament of the x-ray tube? a. high-voltage circuit b. low-voltage circuit c. high-voltage transformer d. low-voltage transformer 30. Which is used to increase the voltage in the high- voltage circuit? a. step-up transformer b. step-down transformer c.autotransformer d. step-up circuit

Answer 1

29. **b. low-voltage circuit**The filament circuit, a low-voltage circuit, regulates the electrical current flow to the x-ray tube filament. This controls the temperature of the filament and thus the number of electrons available for x-ray production.30. **a. step-up transformer**The step-up transformer increases the voltage from the incoming line voltage to the kilovoltage required for x-ray production in the high-voltage circuit.

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