G- In a smooth inclined pipe of uniform diameter 250 mm, a pressure of 50 kPa was observed at section 1 which was at elevation 10 m. At another section 2 at elevation 15 m, the pressure was 20 kPa and the velocity was 1.25 m/s .The fluid in the pipe is water and the density of water at 20°C and 760 mm Hg is 998 kg/m3. Is the direction of flow is: * from section 1 to section 2 None of the above from section 2 to section 1

G- In a smooth inclined pipe of uniform diameter 250 mm, a pressure of 50 kPa was observed at section 1 which was at elevation 10 m. At another section 2 at elevation 15 m, the pressure was 20 kPa and the velocity was 1.25 m/s .The fluid in the pipe is water and the density of water at 20°C and 760 mm Hg is 998 kg/m3. Is the direction of flow is: * from section 1 to section 2 None of the above from section 2 to section 1

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

See similar textbooks

Similar questions

A water jet of diameter 20 mm is striking on a flat plate with a flow rate of 5 L/s. Determine the force exerted by the jet on plate.
A uniform cross-sectional water tank is placed in a cart as shown in figure. The cart is mounted on frictionless rollers and the water is discharged to atmosphere through an attached nozzle. However, the the water level the tank is maintained at a constant height h above the nozzle by an external supply at a volumetric flow rate Q. The cart is restrained from moving by the cable seen in figure . The mass of the tank, cart and water is M. In terms of the parameters h, Aj and the water density ρρ. derive expressions for (a) the volumetric flow rate Q and (b) the tensile force T in the cable. (c) At time t = 0, the cable is cut, and the cart begins to move to the left at a velocity Vc{t} that increases with time. Derive an expression for Vc{t}.
Air is flowing through a 19.6-cm diameter pipe with a velocity of 6.05 m/s. If the temperature of the air is 21.29°C and pressure is 102 kPa, compute the flow rate of air in the pipe in kg/s.
A 1-kW intake fan is used to pull in air (p, = 1.225 kg/m') from a room and push it through a duct of rectangular cross-sectional area of (1 m x 0.5 m), as shown in the figure. The air pressure on the downstream side of the fan is approximately equal to the room air pressure. Estimate the air velocity in the duct if the fan is 70% efficient in transferring energy to the air. Neglect major and minor losses in the duct. Room 0.5 m この O. Flow Eim - Duct cross sectional area
Air having density p = 0.981 kg/m³ is flowing in a wind tunnel. A differential manometer connected to a pitot tube is used to measure the dynamic pressure of the air at the pitot tube location. The liquid in the manometer is oil having a specific gravity of 0.826, and the manometer reading is 76.2 mm. The wind tunnel is on the CU campus in Denver where g = 9.796 m/s?. a) Find the dynamic pressure of the air (answer: 615.8 Pa). b) Find the speed of the air at the pitot tube location (answer: 35.4 m/s). Air p = 0.981 kg/m³ h = 76.2 mm Oil, SG = 0.826
A pump draws water from a 20 cm diam suction pipe and discharges through a15 cm diam pipe in which the velocity is 3.60 m/s. The pressure is – 34. 465 kPaat A in the suction pipe. The 15 cm diam pipe discharges horizontally into air atC. To what height h above B can the water be raised if B is 1.8 m. above A and20 hp is delivered to the pump? Assume that the pump operates at 80 %efficiency and that the frictional loss in the pipe between A and C is 3 m. Determine the inclination angle at point C for the water stream to reach a range of 10 m. Calculate the maximum height that the water can go from the selected datum plane.
A liquid food (density = 1200 kg/m³, viscosity = 0.07 Pa s) is to be pumped from an open constant level reservoir (that has a fluid level of 2 m) to another open tank, with the discharge point of the pipe to the second reservoir being 7 m above the level of the fluid in the first constant level reservoir. The liquid is to be pumped via a steel pipeline system at the rate of 40 gallons per minute. The pipeline system consists of a 4-in. nominal diameter suction pipe that is 20 m long and has a fully open diaphragm valve in it while the discharge pipe is a 1-in. nominal diameter pipe that is 30 m long and has two 90 regular threaded elbows in it. Assuming a pump efficiency of 75%, what should be the rating of the pump to accomplish this task?
(1) Given the working form of the Bernoulli equation as v2 + gz + dW - F dm Where s is the friction heating per unit mass dQ F = Au dm Given also that friction heating in laminar flow of Newtonian fluids in circular pipes is given as -AP F = = -gAz = Q Ax µ 128 Ax is change in the x-direction. A typical capillary viscometer has a large-diameter reservoir and a long, small diameter, vertical tube. The sample is placed in the reservoir and the flow rate due to gravity is measured. The tube is 0.1 m long and has a 1 mm ID. The height of the fluid in the reservoir above the inlet to the tube is 0.02 m. The fluid being tested has a density of 1050 kg / m'. The flow rate is 10* m³ / s. What is the viscosity of the fluid? Typical capillary viscometer
Question 3 Water (p = 1000 kg/m³, μ = 1.12 x 10-3 Ns/ m²) flows through a 0.01-m-diameter pipe at a velocity of 2 m/s. The length of the pipe is 40 m. A pump is used to maintain the flow from one reservoir to another reservoir as shown. The following data are available: KL elbow = 1.5, Kentrance = 0.5, Kexit = 1.0. Elbow Pump Elbow Figure Q1 Note that the entrance and exit are at the same elevation. The free surfaces of the reservoirs are also at the same elevation. (a) Calculate the total head losses in the pipe.
Water is being pumped the through one inch diameter piping arrangement to a higher elevation (5 meters up). Assume incompressible fluid conditions and some heat losses to the surroundings. At the inlet water pressure is 1 bar, temperature 15C, and volumetric flow rate is 0.02 m3/s. At the exit pressure is 2.2 bar, temperature is 10C and velocity of the stream is 40 m/s. Determine: a.Density of the inlet stream using NIST tables. b.Mass flow rate [kg/s] c.Determine h2 from known p2 and T2 using NIST tables d.Find heat rate removed from Q=m(h1-h2) Use Energy Balance Equation with enthalpy difference and in the units of kW to find pumping power in kW. NOTE: The heat is removed from the system, so it should be negative in your equation! show all steps please
Air flows from a 10cm pipe in which the temperature and pressure are 4-C and 280kpa, respectively, into a 5cm pipe in which the pressure is 147kpa gage. Calculate the velocity and discharge in each pipe, assuming isothermal conditions, standard atmospheric pressure and no losses. The gas constant for air is 280N-m/kg-K.
Water at 15 degrees Celsius is flowing through a 2-in ID smooth pipe. The friction loss for a 100-ft section of the pipe amounts to 4.8 lbf/lbm. Determine the velocity of the flow.