Main steam turbine bearings are lined with __________.
Official USCG Answer & Rule Citation
Correct Answer: Option B — Babbitt
Main steam turbine journal bearings are lined with Babbitt, a soft, high-tin or high-lead alloy. Babbitt provides excellent embeddability for foreign particles, conforms well to shaft alignment variations, and prevents scoring of the rotating steel turbine shaft during operation.
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