Chapter 2

The air in the tank is connected to a U-tube manometer . Determine the differential height of the mercury colum (hg) if the gage pressure of the air is measured to be 45 kPa. (Take density of water 1000 kg/m3, specific gravity of oil and mercury is 0.72 and 13.6). Given the height of water is 0.3 cm and height of oil is 72 cm.

A cloased tank contains water and air. the absolute pressure at point A is 98 kPa. Determine the absolute pressure at point B if the density of air is 11.8 kh/m3.

Figure shows a double fluid manometer which is used to determine pressure difference between two pipes. Pipe A contains water while pipe B contains oil. Calculate the pressure difference between pipe A and pipe B.

A double U-tube manometer is connected is connected to pipes A and B which contains fresh water and salt water as shown in Figure. (Take density of fresh water, salt water, air and mercury are 1000 kg/m3, 1035 kg/m3, 1.23 kg/m3, 13600 kg/m3, respectively)

Figure shows a cylindrical pressurized tank that contains air, benzene, water and mercury. Given the mass density of air is 1.23 kg/m3 and the specific gravity (SG) of benzene, water and mercury is 0.88, 1.0. 13.6, respectively. Calculate the absolute pressure of the air in the tank.

The figure shows a closed tank containing compressed air and oil where a U-tube manometer containing mercury is connected to the tank—the height of h1=91 cm, h2=15 cm, and h3=232 cm. Determine the pressure reading of the gauge in units of kPa.(Take the mass density of oil and mercury 900 kg/m3 and 13 600 kg/m3).

Determine the elevation difference, delta h between the water levels in the two open tanks.