Water at 90°C is to be pumped from a low-elevation reservoir to a high-elevation reservoir at a flow rate of 0.0046 cu. meter per second, as shown in the figure below. The atmospheric pressure at the location of the pump installation is 98.4 kPa. The 40-mm-diameter suction pipe has a total length of 7.2 m. The friction factor for the suction pipe is estimated to be 0.025. The centrifugal pump that will be used has an NPSHR of 4.5 m. Will cavitation occur in this pump setup? 5 m (A) Yes, cavitation will occur with NPSHA equal to 4.80 m. B Yes, cavitation will occur with NPSHA equal to -5.20 m. (C) No, cavitation will not occur with NPSHA equal to 4.80 m. No, cavitation will not occur with NPSHA equal to -5.20 m. (pump centerline) *** 19 m

Water at 90°C is to be pumped from a low-elevation reservoir to a high-elevation reservoir at a flow rate of 0.0046 cu. meter per second, as shown in the figure below. The atmospheric pressure at the location of the pump installation is 98.4 kPa. The 40-mm-diameter suction pipe has a total length of 7.2 m. The friction factor for the suction pipe is estimated to be 0.025. The centrifugal pump that will be used has an NPSHR of 4.5 m. Will cavitation occur in this pump setup? 5 m (A) Yes, cavitation will occur with NPSHA equal to 4.80 m. B Yes, cavitation will occur with NPSHA equal to -5.20 m. (C) No, cavitation will not occur with NPSHA equal to 4.80 m. No, cavitation will not occur with NPSHA equal to -5.20 m. (pump centerline) *** 19 m

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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Hydronics

Question

Water at 90°C is to be pumped from a low-elevation reservoir to a high-elevation reservoir at a
flow rate of 0.0046 cu. meter per second, as shown in the figure below. The atmospheric
pressure at the location of the pump installation is 98.4 kPa. The 40-mm-diameter suction pipe
has a total length of 7.2 m. The friction factor for the suction pipe is estimated to be 0.025. The
centrifugal pump that will be used has an NPSHR of 4.5 m. Will cavitation occur in this pump
setup?
5 m
↓
(A) Yes, cavitation will occur with NPSHA equal to 4.80 m.
B) Yes, cavitation will occur with NPSHA equal to -5.20 m.
No, cavitation will not occur with NPSHA equal to 4.80 m.
(D) No, cavitation will not occur with NPSHA equal to -5.20 m.
(pump centerline)
19 m

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