Final exam and certificate
Fifteen questions across the whole course. Pass, and print your Impeller Academy certificate.
⏱ 12 min
- Everyday comparisonStep 1 of 3
The driving test
After all the lessons with an instructor, there is one drive where you show what you can do on your own.
This is that drive. No new ideas — just everything you have learned, from “what is a fluid?” to building your own pump.
- ExplainedStep 2 of 3
How the exam works
15 questions, mixed from all seven modules. Get 10 or more right to pass. You can retry as often as you like — only your best score counts.
Pass, and you unlock a printable certificate with your name, score and rank.
- ExplainedStep 3 of 3
A 60-second recap
A flows from high to low . An flings it outward; the slows it so speed becomes pressure. Water enters at the .
Radial impellers make head, axial ones move flow. is in metres; the pump runs where its curve meets the . Speed changes follow the . Keep above required.
Euler: H = u₂·cᵤ₂/g. picks the shape. Real pumps lose head to slip and friction. Balance what spins, and measure what you build.
📌 Remember this
An impeller gives a fluid energy by flinging it outward; the casing turns that speed into pressure. Everything else — types, curves, cavitation, design — follows from that one idea.