Refer to the drawing of pump and system operating curves (see figure below).

The drawing shows the operating point for a single-speed centrifugal pump operating in a closed cooling water system using 6-inch diameter piping.
If the cooling water system 6-inch diameter piping were replaced with 8-inch diameter piping, the new operating point would occur at a __________ pump head and a __________ pump flow rate.
A. higher; lower
B. higher; higher
C. lower; lower
D. lower; higher
Show Answer
Answer: D
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