Engine General (Supplementary) USCG Question #20 (Set 1)

The discharge capacity of the axial piston hydraulic pump, shown in the illustration, is __________. GS-0058

USCG Exam Illustration GS-0058
USCG Examination Diagram: Illustration GS-0058
Official USCG Answer & Rule Citation

Correct Answer: Option B — fixed by the pump housing angle

In an axial piston pump, the discharge capacity is determined by the stroke length of the pistons. The stroke length is dictated by the angle of the swash plate or the pump housing angle. Adjusting this angle varies the displacement, while the cylinder block dimensions remain fixed.

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