12.21 WILEY A centrifugal pump with a 7-in.-diameter impeller has the performance characteristics shown in Fig. 12.12. The pump is used to pump water at 100 °F, and the pump inlet is located 12 ft above the open water surface. When the flowrate is 200 gpm, the head loss between the water surface and the pump inlet is 6 ft of water. Would you expect cavitation in the pump to be a problem? Assume standard atmospheric pressure. Explain how you arrived at your answer.

12.21 WILEY A centrifugal pump with a 7-in.-diameter impeller has the performance characteristics shown in Fig. 12.12. The pump is used to pump water at 100 °F, and the pump inlet is located 12 ft above the open water surface. When the flowrate is 200 gpm, the head loss between the water surface and the pump inlet is 6 ft of water. Would you expect cavitation in the pump to be a problem? Assume standard atmospheric pressure. Explain how you arrived at your answer.

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

Please list any assumptions and answer all parts. Fig 12.12 is attatched

12.21 LEY A centrifugal pump with a 7-in.-diameter impeller has
the performance characteristics shown in Fig. 12.12. The pump is
used to pump water at 100 °F, and the pump inlet is located 12 ft
above the open water surface. When the flowrate is 200 gpm, the
head loss between the water surface and the pump inlet is 6 ft of
water. Would you expect cavitation in the pump to be a problem?
Assume standard atmospheric pressure. Explain how you arrived
at your answer.

500
Head, ft
# 300
400 7
200
100
0
8 in. dia
0
6
40
1
Figure 12.12
© John Wiley & Sons, Inc. All rights reserved.
-50%
55
09
NPSHR
63
1
1
65
15
+
1
80 120 160 200
Capacity, gal/min
V
240
65
63
60
50
55
40 bhp
30
25
20
280 320
15
10-
505
NPSHR, ft

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