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\text { 1. Use } Q_{\text {actual }}=C Q_{\text {theoritical }}=C A_{2} \sqrt{\frac{2 g h}{\left(1-\left(\frac{A}{A_{1}}\right)^{2}\right)}}=C A_{2} \sqrt{\frac{2 g h}{\left(1-\beta^{4}\right)}} \text { for the venturi meter with } C \approx 0.99

to calculate the actual flow rates and write them in an additional column in Table 1.Calculate the mean and deviation for the calculated flow rates.

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