A reservoir manometer has vertical tubes of diameter (D=18 mathrm{~mm}) and (d=6 mathrm{~mm}). The manometer liquid is

Question:

A reservoir manometer has vertical tubes of diameter $D=18 \mathrm{~mm}$ and $d=6 \mathrm{~mm}$. The manometer liquid is Meriam red oil. Develop an algebraic expression for liquid deflection $L$ in the small tube when gage pressure $\Delta p$ is applied to the reservoir. Evaluate the liquid deflection when the applied pressure is equivalent to $25 \mathrm{~mm}$ of water gage.

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