Prepare for the Ben Hirst Fire Apparatus Driver and Operator Exam 1. Utilize flashcards and multiple choice questions, each with hints and explanations. Ace your exam!

Multiple Choice

In a multi-stage centrifugal pump, what is the term for the arrangement in which all impellers discharge into a single discharge path?

The arrangement where all impellers discharge into a single discharge path is called parallel. In a parallel setup, each impeller develops the same head, and their flows combine in the common discharge line, so the pump can deliver a higher total flow without significantly increasing the discharge pressure. This is different from a series/tandem arrangement, where stages are stacked to raise head (pressure) rather than flow.

The arrangement where all impellers discharge into a single discharge path is called parallel. In a parallel setup, each impeller develops the same head, and their flows combine in the common discharge line, so the pump can deliver a higher total flow without significantly increasing the discharge pressure. This is different from a series/tandem arrangement, where stages are stacked to raise head (pressure) rather than flow.