The common water meter found in most homes can be thought of as a type of turbine,

Question:

The common water meter found in most homes can be thought of as a type of turbine, since it extracts energy from the flowing water to rotate the shaft connected to the volume-counting mechanism (Fig. P14–119C). From the point of view of a piping system, however (Chap. 8), what kind of device is a water meter? Explain.

FIGURE P14–119C

Water meter