The state exam at the top license tier rarely tests a single skill in isolation — it builds a scenario and expects you to chain several calculations together: convert a unit, apply Q = VA, apply continuity, convert again, and interpret the result operationally. This guide works through that kind of multi-step problem end to end, then covers a second advanced-tier skill: understanding the math relationship behind differential-head flow meters (venturi and orifice meters), which report flow indirectly through a pressure measurement rather than measuring it directly.
Multi-Step Flow Problems: A Worked Walkthrough
The skill being tested in multi-step problems isn't any single formula — it's sequencing: recognizing which formula to apply first, carrying the right units forward, and not losing track of what each intermediate answer represents.
Problem. Water leaves a treatment pl