lop a head h = plem. (a) What s operating at %3D

Structural Analysis
6th Edition
ISBN:9781337630931
Author:KASSIMALI, Aslam.
Publisher:KASSIMALI, Aslam.
Chapter2: Loads On Structures
Section: Chapter Questions
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Two pumps whose characteristics are given in
Sample Prob. 15.13 are to be used in parallel.
They must develop a head h = 35 + 20Q2 as in
the sample problem. (a) What is the flow rate
with both pumps operating at 1800 rpm? (b) The
speed of one of the pumps is reduced until it no
longer delivers water. At approximately what
speed will this happen?
Sample Prob. 15.13: The two pumps (n = 1800
rpm) each have the following characteristics:
h, ft:
100 90
80 60
40 20
Q, gpm: 0
110 180 250 300 340
Transcribed Image Text:Two pumps whose characteristics are given in Sample Prob. 15.13 are to be used in parallel. They must develop a head h = 35 + 20Q2 as in the sample problem. (a) What is the flow rate with both pumps operating at 1800 rpm? (b) The speed of one of the pumps is reduced until it no longer delivers water. At approximately what speed will this happen? Sample Prob. 15.13: The two pumps (n = 1800 rpm) each have the following characteristics: h, ft: 100 90 80 60 40 20 Q, gpm: 0 110 180 250 300 340
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