Engine General (Supplementary) USCG Question #443 (Set 8)

Which of the following statements correctly describes the construction of the close coupled sanitary pump shown in the illustration? GS-0070

USCG Exam Illustration GS-0070
USCG Examination Diagram: Illustration GS-0070
Official USCG Answer & Rule Citation

Correct Answer: Option C — The pump and motor have a common shaft.

Close-coupled pumps are designed with the impeller mounted directly onto the extended shaft of the electric motor. This configuration eliminates the need for a separate pump shaft, bearings, and flexible coupling, resulting in a compact, space-saving design that ensures precise alignment between the motor and the pump rotating element.

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