Fire Inspection and Code Enforcement Practice Test 2026 - Free Practice Questions and Study Guide

The main idea is how a pump converts mechanical energy into fluid energy using spinning impellers. A centrifugal pump does exactly that: its impeller rotates inside a housing, throwing water outward by centrifugal force. As water moves from the center (the eye) toward the outer casing (the volute), its velocity and pressure rise, delivering water at the required discharge pressure. This combination of rotating impeller and centrifugal force is why this type is the standard for modern fire pumps—simple, reliable, and capable of high flow.

The other terms aren’t pump types. A high-rise building describes a scenario where pumps work; head pressure refers to pressure from height in a piping system; a hydrostatic test is a pressure test to verify strength—none of these are a pump type.