Question 159Motor Plants - 1st Asst/Chief

The correct answer is B) Gear-type coupling. Gear-type couplings are generally not repairable if completely damaged, and are usually replaced rather than repaired. This is because the gear teeth and internal components of a gear-type coupling are precision-machined parts that are difficult to repair effectively. If the gear teeth or other critical components are severely worn or broken, the entire coupling usually needs to be replaced to ensure proper and safe operation. In contrast, the other coupling types listed (flexible disk-ring, block and jaw, grid spring) are more commonly repairable through replacement of individual components like the flexible disks, jaws, or grid springs, rather than requiring a full replacement of the entire coupling assembly.