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1)  A plot of pump net head is shown below. Two curves are drawn: blue color curve and red color curve. Which one is called pump performance curve? Will the location of pump performance curve change if the velocity of the fluid at pump outlet changes? a) red curve; No, the location will not change b) blue curve; yes, the location will change c) red curve; yes, the location will change d) blue curve; No, the location will not change

1)  A plot of pump net head is shown below. Two curves are drawn: blue color curve and red color curve. Which one is called pump performance curve? Will the location of pump performance curve change if the velocity of the fluid at pump outlet changes? a) red curve; No, the location will not change b) blue curve; yes, the location will change c) red curve; yes, the location will change d) blue curve; No, the location will not change

Elements Of Electromagnetics
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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1)  A plot of pump net head is shown below. Two curves are drawn: blue color curve and red color curve. Which one is called pump performance curve? Will the location of pump performance curve change if the velocity of the fluid at pump outlet changes?

a)

red curve; No, the location will not change
b)

blue curve; yes, the location will change
c)

red curve; yes, the location will change
d)

blue curve; No, the location will not change

2) In a turbine system, states A and B are homologous. If the net head ratio HA/HB =16 , volume flow rate ratio VA˙/VB˙=9. What is the diameter ratio DA/DB ?

a)

3/2
b)

6
c)

12
d)

2/3

 

This diagram illustrates the relationship between flow rate (`v̇`) and head (`H`) in a fluid dynamics context, typically associated with pump performance curves. ### Axes: - The horizontal axis represents the flow rate (`v̇`). - The vertical axis represents the head (`H`). ### Curves: - **Blue Curve:** Represents the head (`H`) vs. flow rate (`v̇`) for a pump. The curve starts high on the left, indicating that at low flow rates, the pump provides a high head. As the flow rate increases, the head decreases, showing a typical pump performance curve. - **Red Curve:** Represents the system curve, showing the relationship between flow rate and head for a given system. It starts lower and increases, demonstrating that as the flow rate increases, the head loss due to friction and other factors also increases. ### Intersection: - The point where the blue and red curves intersect indicates the operating point. This point represents the condition where the pump head equals the system head, meaning the pump capability matches the system demand at that flow rate. This graph is essential for understanding pump and system interactions, allowing engineers to ensure that a pump operates efficiently within a system's requirements.
Transcribed Image Text:This diagram illustrates the relationship between flow rate (`v̇`) and head (`H`) in a fluid dynamics context, typically associated with pump performance curves. ### Axes: - The horizontal axis represents the flow rate (`v̇`). - The vertical axis represents the head (`H`). ### Curves: - **Blue Curve:** Represents the head (`H`) vs. flow rate (`v̇`) for a pump. The curve starts high on the left, indicating that at low flow rates, the pump provides a high head. As the flow rate increases, the head decreases, showing a typical pump performance curve. - **Red Curve:** Represents the system curve, showing the relationship between flow rate and head for a given system. It starts lower and increases, demonstrating that as the flow rate increases, the head loss due to friction and other factors also increases. ### Intersection: - The point where the blue and red curves intersect indicates the operating point. This point represents the condition where the pump head equals the system head, meaning the pump capability matches the system demand at that flow rate. This graph is essential for understanding pump and system interactions, allowing engineers to ensure that a pump operates efficiently within a system's requirements.
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