Two tanks (A and B) are connected using a multifluid manometer. Air is trapped in the pipeline of CD as shown below. The specific weight of oil is 0.9 and that of water is 1. Determine the specific weight of air if Tank A is open to atmosphere (101.325 kPa) and the pressure in tank B is 113 kPa. Given that: h = 1.35 m, h: = 2 m, hy = 0.5 m, hạ = 1.25 m, hs = 0.99 m and he = 1.5 m. Air h. Oil D: D CO: C D. h. B ha Water he 1,25 m he he B: Water B.

4.As shown in the figure, a U-tube pressure gauge containing mercury is installed on the water storage tank. The difference between the water surface height of the water tank and the average height of the mercury surface in the manometer is z. the height difference between the two sides of the mercury surface is 2h. What is the ratio of z to h (z/h)? (The density ratio of mercury to water is s=13.6) Pa Pa Pw water B mercury

The manometer pressure at pipe A is about 30mmHg and the initial differential reading of Mercury is 0.30 m as shown.Calculate the absolute pressure at pipe B.