Consider the following one$-$pipe system with a contraction followed by an expansion.

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A pipe undergoes a contraction from an initial diameter $D_1$ to a smaller diameter $D_2$ and then returns to its original diameter $D_1.$ The mean velocity in the smaller diameter

pipe section is $u=5\mathrm{.}813[\frac{m}{s}].$ The ratio of diameters $\frac{D_2}{D_1}=0\mathrm{.}7.$ What is the ratio of the expansion loss to the contraction loss $\frac{h_e}{h_c}?$

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