The large filament may be not working properly. The milliamp selector may not be

Question

       The large filament may be not working properly.                  
       The milliamp selector may not be switching to the higher settings.
       The exposure timer feedback system is not working properly.
       The autotransformer contact switches for the kVp are failing to make contact.

Which of the following would be the most likely to fail in the X-ray system if the system testing reveals a poorly exposed X-ray shot only when the system is in the large focal spot setting for large X-rays? (Points : 5)

Explanation / Answer

b. The milliamp selector may not be switching to the higher settings.

The function of milliamp selector is to measure the flow of current in the high-voltage circute, if the milliamp selector fail to switch to higher settings, the X-ray system fails.

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