Question

13 multiple choice 1 point if the primary beam is collimated from an activated chamber, the result is a light radiograph dark radiograph short exposure time decrease in radiographic density. 14 multiple choice 1 point the backup time of most aecs is set at ____ of the anticipated manual exposure time. 10% 50% 100% 150%

Explanation:

1. When the primary beam is collimated from an activated chamber, more radiation is absorbed before reaching the film, resulting in a dark radiograph.
2. The backup time of most Automatic Exposure Controls (AECs) is set at 150% of the anticipated manual exposure time to ensure sufficient exposure in case the AEC malfunctions.

Answer:

1. B. dark radiograph
2. D. 150%