Carbon bearings are used under which of the following conditions ?
Correct answer: D. All of the above
- A. Where lubrication is difficult or im-possible
- B. Where corrosive chemical action exists
- C. Where high temperature exists
- D. All of the above
Explanation
Carbon bearings are suitable where oil or grease lubrication is impractical, and they withstand corrosive chemicals and relatively high temperatures. These properties make all the listed conditions valid.
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