Which pump is named for its gear teeth that displace liquid?

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Prepare for the NFPA 20 Fire Pump Certification Exam. Study with quizzes featuring flashcards and multiple-choice questions, complete with explanations. Excel in your certification journey!

Multiple Choice

Which pump is named for its gear teeth that displace liquid?

Explanation:
Positive displacement action moves a fixed amount of fluid with each cycle. In a gear pump, interlocking gears with teeth create sealed cavities. As the gears rotate, these cavities pick up liquid from the suction side and carry it around to the discharge side, displacing a precise volume with every turn. The defining feature is the gear teeth themselves, which is why this pump is named for them. End suction and horizontal describe how a pump is arranged or oriented, and fire pump is a broad category—neither focuses on gear teeth as the displacement mechanism.

Positive displacement action moves a fixed amount of fluid with each cycle. In a gear pump, interlocking gears with teeth create sealed cavities. As the gears rotate, these cavities pick up liquid from the suction side and carry it around to the discharge side, displacing a precise volume with every turn. The defining feature is the gear teeth themselves, which is why this pump is named for them. End suction and horizontal describe how a pump is arranged or oriented, and fire pump is a broad category—neither focuses on gear teeth as the displacement mechanism.

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