Question 635General Subjects - Assistant Engineer

The correct answer is D) The jaws on the four-jaw independent chuck can be individually adjusted. This is the correct answer because the key difference between a four-jaw independent chuck and a three-jaw universal chuck is that the four-jaw chuck allows each jaw to be adjusted independently, while the three-jaw chuck is self-centering and cannot be adjusted individually. The other options are incorrect because: A) is true for both four-jaw and three-jaw chucks, B) describes a feature of the three-jaw universal chuck but not the difference, and C) is false, as the four-jaw chuck can be more accurate than the three-jaw chuck when properly adjusted.