COMPUTE THE CAPILLARY RISE IN mm. OF PURE WATER AT 10^0 C EXPECTED IN A 0.8 mm θ TUBE
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COMPUTE THE CAPILLARY RISE IN mm. OF PURE WATER AT 10^0 C EXPECTED IN A 0.8 mm θ TUBE
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- Find the capillary rise in a tube for a water glass interface (teta) = 0° if the tube radius is 1mm and the density is 1000 kg/m³. Surface tension of water is 0.0728 N/m.Ex.1 Ans. A glass tube 0.25 mm in diameter contains a mercury column with water above the mercury. The temperature is 20°C at which the surface tension of mercury in contact with water is 0.037 kg()/m. What will be the capillary depression of the mercury? Take angle of contact 0= 130°. 3.02 cmCompute the capillary rise in mm of pure water at 100C expected in a 0.8 mm diameter tube. Surface tension of water at 100C=0.0742 N/m and y=9.804 kN/m3 Answer is in mm
- 1 a) A 2-mm-diameter clean glass tube is inserted in water at 15°C (Figure 1.2). Determine the height that the water will climb up the tube. The water makes a contact angle of 0° with the clean glass. ADo h W=y¥ Air Water Figure 1.2Find the capillary rise in a tube shown for a water- glass interface. ∅=0 if the tube radius is 1mm and the density is 1000kg/m³. Surface tension of water is 0.0728 N/m.Assuming that pressure will increase at a uniform rate and there is no damping of the pressure wave. Water from a reservoir that flows through a 650mm pipe at 1.8m/s is completely stopped by a closure of a 160 m valve from the reservoir. The thickness of the pipe is 25mm, bulk modulus of water is 2.2x10⁹ Pa and E of steel is 1.4x10¹¹ Pa. Determine the following: a. Celerity of the pressure wave b. Equivalent bulk modulus of water c. Pressure on the pipe after closure of the valve d. Time required to avoid water hammer e. Water hammer pressure of the velocity will decrease to 1.2m/s f. Maximum permissible discharge after the outlet valve closure. ANSWER: d) t = 0.256 sec. e) Ph=pCAV = 749.8476 kPa f) Q = AV = 0.597 m³/s a) C = 1249.746m/s b) k' = 1.562x10⁹ Pa c) Ph=pCV = 2249.5428 kPa
- In horizontal pipe, which of the following is constant? Pressure headElevation headVelovity head 12(a) Determine the height water at 70F will rise due to capillary action in a clean, 1/4-in.-diameter tube. (b) What will be the height if the diameter is reduced to 0.01 in.? At this temperature, water = 0.00497 lb/ft and water = 62.3 lb/ft3 . Use = 0degrees7. What is the pressure value (PA) needed to achieve equilibrium for the figure shown (kPa)? a. 0.59 c. 1.02 b. 1.02 d. None of all these PA S.G=0.87 30 120 mm
- 28/2/202) 2 = Semester 1 Exar Students' classes = docs.google.com a 25.544 mm 21.014 mm Determine the horizontal and vertical components of the liquid pressure acting on the semicylindrical gate ABC, as shown in the figure. The width into the paper is 1 m. 1 m Liquid (s.g. = 0.88) 3.8 m 1 mThis is a mercury U-tube*acceleration = 4.905 m/s^2 to the right What is the gage pressure at A? in kPa(4) Consider that we have a horizentral pipe, like shown in the sketh, which is carrying in this case, cooling water at 10 °C. The elevation of the big tank of cooling water is 100 m, the elevation of the center line of the pipe is 20 m, the length of the pipe is 2000 m. Head loss in the pipe is 0. 07 L / D) V? H. D=20 cm, the rate of flow is 0.0 a=1 ase calculate the 2g pressure in the pipe. Elevation = 100 m Elevation = 20 m L=2000 m %3D II ||