Engine General (Supplementary) USCG Question #798 (Set 15)

Figure "B", shown in the illustration, is dimensioned to indicate a/an __________. GS-0019

USCG Exam Illustration GS-0019
USCG Examination Diagram: Illustration GS-0019
Official USCG Answer & Rule Citation

Correct Answer: Option A — interference fit

In mechanical engineering drawings, an interference fit occurs when the internal member is larger than the external member, requiring force for assembly. Figure 'B' illustrates this condition, where the dimensions indicate that the shaft diameter exceeds the bore diameter, creating the necessary pressure for a secure, non-slip mechanical connection.

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