Steam Plants (Boilers & Turbines) USCG Question #799 (Set 27)

In the diagrammatic arrangement of the thrust bearing, shown in the illustration, the direction of shaft rotation and the direction of thrust are indicated respectively by arrows __________. Illustration SE-0012

USCG Exam Illustration SE-0012
USCG Examination Diagram: Illustration SE-0012
Official USCG Answer & Rule Citation

Correct Answer: Option B — F and J

Vector analysis of shaft rotation and resultant propeller thrust dictates that forward rotation coupled with a specific pitch produces a corresponding axial load direction against the active faces of the thrust bearing assembly.

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