(b) Parallel-connected four centrifugal pumps each have a specific speed of 28 and operate at 1400 rpm while delivering water with outlet velocity of flow of 3 m/s. The impeller outer diameter and blade angle at outlet are 0.23 m and 26° to the tangent respectively. The four pumps are replaced by series-connected double centrifugal pumps to meet the same duty (same head and flow rate) with a specific speed of 31 for each pump. The outer diameter of the impeller is 0.5 m and passage width is 0.04 m. At exit, the blades are backward curved and making an angle of 15° with tangent. Determine the manometric efficiency of each pump for the in series- connected pump system?

(b) Parallel-connected four centrifugal pumps each have a specific speed of 28 and operate at 1400 rpm while delivering water with outlet velocity of flow of 3 m/s. The impeller outer diameter and blade angle at outlet are 0.23 m and 26° to the tangent respectively. The four pumps are replaced by series-connected double centrifugal pumps to meet the same duty (same head and flow rate) with a specific speed of 31 for each pump. The outer diameter of the impeller is 0.5 m and passage width is 0.04 m. At exit, the blades are backward curved and making an angle of 15° with tangent. Determine the manometric efficiency of each pump for the in series- connected pump system?

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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