1. The pump running at 3500 r/min, has the following measured performance, Q. gal/min 50 100 150 200 250 300 350 400 450 H, ft 201 200 | 198 189 181 194 169 156 139 7, % 29 50 64 72 77 80 81 79 74 Is used to deliver water at 20°C through 600 ft of cast iron pipe (f=0.0258) to an elevation 100 ft higher. A certain centrifugal pump having a head-capacity relationship given by the equation H = 201 – 1.04 x 10-4 Q². All minor losses are negligible. Determine (a)

Elements Of Electromagnetics
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Author:Sadiku, Matthew N. O.
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1. The pump running at 3500 r/min, has the following measured performance,
Q. gal/min
50
100
150
200
250
300
350
400
450
H, ft
201
200 198 194 189
181
169
156
139
n, %
29
50
64
72
77
80
81
79
74
Is used to deliver water at 20°C through 600 ft of cast iron pipe (f=0.0258) to an elevation
100 ft higher. A certain centrifugal pump having a head-capacity relationship given by
the equation H = 201 – 1.04 × 10-ª Q². All minor losses are negligible. Determine (a)
the proper pipe diameter for BEP operation and (b) the flow rate which results if the pipe
diameter is 3 in. Ans. (a) 0.31 ft, (b) 220 gpm.
Transcribed Image Text:1. The pump running at 3500 r/min, has the following measured performance, Q. gal/min 50 100 150 200 250 300 350 400 450 H, ft 201 200 198 194 189 181 169 156 139 n, % 29 50 64 72 77 80 81 79 74 Is used to deliver water at 20°C through 600 ft of cast iron pipe (f=0.0258) to an elevation 100 ft higher. A certain centrifugal pump having a head-capacity relationship given by the equation H = 201 – 1.04 × 10-ª Q². All minor losses are negligible. Determine (a) the proper pipe diameter for BEP operation and (b) the flow rate which results if the pipe diameter is 3 in. Ans. (a) 0.31 ft, (b) 220 gpm.
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