# Homework Help: Characteristic Curve of a Centrifugal Pump

1. Jul 20, 2013

### Michael V

1. The problem statement, all variables and given/known data

The pump characteristic curve of a centrifugal pump can be plotted from the following details:

(See attachment)

The pump delivers 90 L/s when pumping against a static head of 12 m. Plot the pump characteristic curve from the details given and calculate:

1. The quantity of water delivered in L/s.
2. The total head pumped against, if the static head and pipe length are increased by 30%.

2. Relevant equations

$H_{Total}$ = $H_{static}$ + $H_{friction}$

$\frac{H_{f1}}{H_{f2}}$ = $(\frac{Q_{1}}{Q_{2}})^{2}$

3. The attempt at a solution

If anyone can help me where to start. I drew the curve and now I'm completely stuck and confused. Any help will be greatly appreciated.

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