Elements Of Electromagnetics
7th Edition
ISBN: 9780190698614
Author: Sadiku, Matthew N. O.
Publisher: Oxford University Press
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- The front and side views of a centrifugal impeller are shown in the figure below. All symbols have their usual meanings. The outer radius of the impeller is r2 = 0.4 m and the blade height at the impeller outlet b2₂ = 0.03 m. The volume flow rate of water (density = 1000 kg/m³) through the impeller is 0.2 m³/s. The outlet blade angle 8₂ = 50 degrees and the impeller rotational speed w=1600 rpm. Assume negligible losses, and the design conditions of whirl-free and shock-free entry. The impeller torque is B₂F N-m. Front View 12 b2 |+| Side Viewarrow_forwardThe system curve for a water supply system is shown in the figure below (i.e., red curve). If a 7-inch pump is operating at 1160 rpm, what will be the discharge of water through the system in GPM? Curve no. 2175 Min. Imp. Dia. 6.25" Size 5 x 4 x 7.0 40 HEAD IN FEET 30 25 W 20 10 5 L/SEC 5 7.00" (178mm) 6.75" (171mm) 6.50" (165mm) 15 6.25" (159mm) 7.25" (184mm) O 150 GPM Laco O 350 GPM O 450 GPM O 250 GPM 10 Model 4075 FI & CI Series 15 70% 20 "Dede de 088 A. 25 REQUIRED NPSH 90 1160 RPM November 1, 2010 TM 90- N 00 30 8800 877 1HP(.75KW) de (5 60% ox 35 -10% 5% Tolo 10. 3HP(2.2KW) 2HP(1 5KW). 15HP(1 1KW). CURVES BASED ON CLEAR WATER WITH SPECIFIC GRAVITY OF 1.0 ▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬ 75 150 225 300 375 450 525 600 675 FLOW IN GALLONS PER MINUTE 45 LOWONG FEET 15 12 9 6 0 6 5 + 2 1 750 NPSH HEAD IN METERS 45 36 OG KPO 27 18 -9 -70 -60 -50 -40 20 10 -0 HEAD IN KILOPASCALSarrow_forward1. If the pump rotated at 2000 rpm and instead and used a 9" impeller, what would the head be when moving 400 gallons per minute? 2. How much input power would be required to move 200 gpm of gasoline in the pump described in the chart with an impeller diameter of 8 3/4"?arrow_forward
- A turbine has the following data: inlet radius = 2.2 m outlet radius = 1.5 m blade width at inlet = 0.8 m blade width at outlet = 2.1 m inlet blade angle = 66º outlet blade angle =18.5ºN = 100 rpm Q = 85 m3/s Calculate the angle at the inlet by which the wicket gates should turn the flow from radial. Round off your final answer to two decimal places.arrow_forward1.1. The pump whose performance curves are shown in Figure P1.1 is operated at 1750 rpm and is connected to a 2-in. i.d. galvanized iron pipe 175 ft long. What will be the flow rate and power input? 100 90 Head curve 80 70 60 50 40 -Efficiency 30 20 10 20 40 60 80 100 120 140 160 180 Flow rate (gpm) FIGURE P1.1 Performance curves for a pump with a 9-in. impeller and speed 1750 rpm. 1.7. If the pump and pipe arrangement of Problem 1.1 now includes an elevation increase of 30 ft, what flow will result? Head rise (ft); efficiency ()arrow_forward
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