Using a U-tube manometer to measure gauge pressure of fluid density p = 700 kg/m3, and the manometric fluid is mercury, with a relative density of 13.6. What is the gauge pressure if h; =0.4 m and h2 0.9 m? Fluid P, mass density p Liquid Q, mass density P a. 122821 Pa b. 2747 Pa C. 117328 Pa
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- 1. A clean circular glass tube is to be selected in the design of a manometer to measure the pressure of Kerosene . Specific gravity of kerosene 0.82 and surface tension of kerosene = 0.025 N/m. If the capillary rise is to be limited to 1 mm, the smallest diameter (cm) of the galss tube should be most nearly ... a) 1.35 b) 1.5 c) 1.75 d) 2.00H.W.12// A vertical conduit is carrying oil (SG manometer is tapped into the conduit at points A and B. Determine the difference in pressure between A and B when h = 3 in. What is the difference in the piezometric pressure between A and B? 0.95). A differential mercury %3D SGm= 13.6 %3D 18 is =3 in MercurySubjact: Data: An inverted u tube manometer is connected to two horizontal pipes A. and 8 threugh which water is flowing The vertical distance between axes of the se pipes is 30 cM When an oil SG=0.8 îs uced as a Jauge fluid, the vertical heigh 1s of water columos in the two limbs are found to be the same and equal to 35 cm. Determine the difference Of pressure between the pipes. 0.8 Sp.gr. C. 30 cm 35 cm 35cm tw ater 30cm water
- 5) Determine the value of y in the manometer shown in the figure. 1 m Alr, 5 KPa Oil S = 0.8 3 m 1 m Water 0.5 ml Mercury 6) For a gage reading of -17.1 kPa, determine the (a) elevations of the liquids in the open piezometer columns E, Fand G and (b) the deflection of the mercury in the U-tube manometer neglecting the weight of air. Gage Air El. 15 m S0.70 El. 12 m Water El. 8 m S 1.6 B. 4m YMercuryAnswer the following questions: 1. A clean circular glass tube is to be selected in the design of a manometer to measure the pressure of Kerosene . Specific gravity of kerosene = 0.82 and surface tension of kerosene = 0.025 N/m. If the capillary rise is to be limited to 1 mm, the smallest diameter (cm) of the galss tube should be most nearly a) 1.35 b) 1.5 c) 1.75 d) 2.00 2. Both a gage and manometer are connected to a gas tank to measure its pressure. If the reading on the pressure gage is 80 kPa. The distance between the two fluid levels of the manometer h is ..... if the gage fluid in the manometer is a mercury (s 13.6); and h is if the gage fluid in the manometer is water. a) 0.4 m; 9m b) 0.9m; 4.3 m c) 6.213m; 0.7626 m d) 4.91m; 0.668m P= 80 kPa h = ? 3. A 50-ton, 6-m diameter hemispherical dome on a level surface is filled with water as shown in figure. An engineer claims that be can left this dome by attaching a long tube to the top and filling it with water. So, the required…A vertical clean glass tube of uniform bore is to be used as a piezometer for measuring pressure of a liquid at a point. The liquid has a mass density of 1425 kg/m³ and a surface tension of 0.06 N/m in contact with air. If the capillary rise in the tube is not to exceed 2.0 mm, the required minimum diameter (in mm) of the tube is {Take angle of contact with glass is zero]
- 3.23 A tank is fitted with a manometer on the side, as shown. The liquid in the bottom of the tank and in the manometer has a specific gravity (SG) of 3.0. The depth of this bottom liquid is 20 cm. A 15 cm layer of water lies on top of the bottom liquid. Find the position of the liquid surface in the manometer. 15 cm Water Ah =? 20 cm SG = 3.0 Problem 3.23Ex.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 cmWhich parameters do Barometer and Manometer measure? o Pressure difference; Atmospheric pressure o Pressure difference; Absolute pressure o Absolute pressure; Pressure difference o Atmospheric pressure; Pressure difference • What is the absolute pressure at location 1 (P1)? Ga OP = Pan + Pgh OP = Pan OP, - Pgh OP can not be calculated
- 2. 0.1 m at a constant temperature and pressure seen in the figuren water flowing through a diameter pipe with a mass flux of 6000 kg/m's, then a 0.3 m diameterpipe with orifice attached to it it is transitioning to the line. The orifice-bound and manometer sIVisi ilcm between arms in the manometer containing mercury the difference has been observed to be. As a result of the measurements made the origins of permanent pressure loss, pressure loss It was found to be up to 81%. Accordingly; a) permanent pressure in the pipe due to orifice calculate the loss in terms of pascals (APK receiver). B) calculate the linear velocity value in the orifice (V)). orifis Drection of fow D, = 0.1 m D, = 0.3 m G. = 6000 kg / m2s h=1 cm Data: • Pau = 1000 kg / m2, = 13600 kg / m3 %3DSubjact: Data: An invertedu tube manometer is connected to two horizontal pipes A. and 8 threugh which water is flowing The vertical distance between axes of these pipes is 30 cM When an oil SG=0.8 îs uced as a Jauge fluid, the vertical heigh 15 of and equal t0 water columos in the two limbs are found to be the same 35 cm. Determine the difference Of pressure between the pipes. 0.8 Sp.gr. C. 30 cm 35 cm 35cm tWater 30cm waterWeter flows up a tapered pipe (figure). A differential mercury manometer is attached to the pipe at Wand B. The pipe has a diameter of 200 mm at A and 100 mm at B, the point B being 1 m above the alot A. Obtain the deflection in the manometer corresponding to a discharge of 50 L/s. Neglect the friction in the pipe. Relative density of mercury 13.6. %D 100 mm 1 m 200 mm