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: hị = 1.35 m, hz = 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: D. h. B h: Water he 25 m he the Water B: E: B:

A Q4: A diffuser, has air entering at 100 kPa, 280 K, with a velocity of 200 m/s. The inlet cross-sectional area of the diffuser is 100 mm2. At the exit, the area is 860 mm2, and the exit velocity is 20 m/s. Determine the exit pressure and temperature of the air. Take Cp=1.005 KJ/kg.K A: 280 K B: 300 K C: 320 K D: 340 K * 2) Determine the exit pressure of the air if inlet temperature of the air 300 K. A: 124 KP B: 134 KP C: 144 KP * D: 154 KP

1. A hole in the bottom of a large open tank discharges water to the atmosphere. If the exit velocity in the absence of losses is Ve, find the loss coefficient for the hole if the actual velocity is Ve/2. Assume turbulent flow. 2. Air enters a duct at a speed of 100 m/s and leaves it at 200 m/s. If no heat is added to the air and no work is done by the air, what is the change in temperature of the air as it passes through the duct?  

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