i need the answer quickly 3. A 6.85 in pump, running at 3500 r/min, has the following measured performance for waterat 20°C ( pw =1.94 slug/ft'):Q. gal/min50100 150200250300350400450H, ft201200198194189181169156139n, %295064727780817974(a) Estimate the horsepower at BEP. If this pump is rescaled in water to provide 20 bhp at3000 r/min, determine the appropriate (b) impeller diameter, (c) flow rate, and (d)efficiency for this new condition. Ans. (a) P = 18.5 bhp, (b) D= 7.64 in, (c) Q' =415 gpm.

(a) BEP stands for Best Effeciency Point. from the given table data the maximum efficiency is 0.81…

3. A 6.85 in pump, running at 3500 r/min, has the following measured performance for water at 20°C ( pw =1.94 slug/ft): Q. gal/min 50 | 100 | 150 200 250 300 350 450 400 H, ft 201 200 198 194 189 181 169 156 139 7, % 29 50 64 72 77 80 81 79 74 (a) Estimate the horsepower at BEP. If this pump is rescaled in water to provide 20 bhp at 3000 r/min, determine the appropriate (b) impeller diameter, (c) flow rate, and (d) efficiency for this new condition. Ans. (a) P= 18.5 bhp, (b) D= 7.64 in, (c) Q' =415 gpm. %3D

3. A 6.85 in pump, running at 3500 r/min, has the following measured performance for water at 20°C ( pw =1.94 slug/ft): Q. gal/min 50 | 100 | 150 200 250 300 350 450 400 H, ft 201 200 198 194 189 181 169 156 139 7, % 29 50 64 72 77 80 81 79 74 (a) Estimate the horsepower at BEP. If this pump is rescaled in water to provide 20 bhp at 3000 r/min, determine the appropriate (b) impeller diameter, (c) flow rate, and (d) efficiency for this new condition. Ans. (a) P= 18.5 bhp, (b) D= 7.64 in, (c) Q' =415 gpm. %3D

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

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