If residual drops 16%-25%, what multiplier applies to main flow?

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Prepare for the City of Miami Fire Department Driver-Engineer Exam. Review multiple choice questions with hints and explanations. Succeed on your test!

Multiple Choice

If residual drops 16%-25%, what multiplier applies to main flow?

Explanation:
When residual pressure falls by about 16–25%, you keep the main flow at its standard level. This range isn’t large enough to require boosting the main flow, so the multiplier stays at 1X, meaning no adjustment beyond the baseline flow. If losses were much greater, you’d use a higher multiplier to compensate; if there were no loss, the situation would be different, but with this range the baseline flow is still appropriate.

When residual pressure falls by about 16–25%, you keep the main flow at its standard level. This range isn’t large enough to require boosting the main flow, so the multiplier stays at 1X, meaning no adjustment beyond the baseline flow. If losses were much greater, you’d use a higher multiplier to compensate; if there were no loss, the situation would be different, but with this range the baseline flow is still appropriate.

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