Answered: Pressure rise 0.5+ PL°D$ Power Ap PN?D?…

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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Question

In Prob. it would be difficult to solve for Ω because of it
appears in all three of the dimensionless pump coefficients.
Suppose that, in Prob. 5.61, Ω is unknown but D = 12 cm
and Q = 25 m ³ /h. The fluid is gasoline at 20 ° C. Rescale the
coefficients, , to make a plot of
dimensionless power versus dimensionless rotation speed.
Enter this plot to find the maximum rotation speed Ωfor
which the power will not exceed 300 W.

Pressure rise
0.5+
PL°D$
Power
Ap
PN?D?
= 6.0 – 120
(ΩD
Pump data
(N in r/s)
= flow coefficient
2.

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