Question 1 of 8
Basic

Are axial flow impellers used in closed pump designs?

Question 2 of 8
Basic

What kind of pumps would normally NOT have a radial flow impeller?

Question 3 of 8
Basic

What does ‘NPSH’ stand for in the NPSH-curve?

Question 4 of 8
Basic

How much of the world’s total volume of water is fresh water?

Question 5 of 8
Basic

In a pump curve, head, power consumption, efficiency and NPSH are shown as a function of…

Question 6 of 8
Basic

In what year was the centrifugal pump invented?

Question 7 of 8
Basic

What does QH curve show?

Question 8 of 8
Basic

At the very highest level, what are the two main types of pump?

Question 8 of 8
Basic

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1: Are axial flow impellers used in closed pump designs?
Yes
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1: Are axial flow impellers used in closed pump designs?
Sometimes
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1: Are axial flow impellers used in closed pump designs?
No
2: What kind of pumps would normally NOT have a radial flow impeller?
Circulating pumps
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2: What kind of pumps would normally NOT have a radial flow impeller?
Immersible pumps
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2: What kind of pumps would normally NOT have a radial flow impeller?
Sewage treatment pumps
3: What does ‘NPSH’ stand for in the NPSH-curve?
Net potential surface heat
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3: What does ‘NPSH’ stand for in the NPSH-curve?
Net peripheral suction height
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3: What does ‘NPSH’ stand for in the NPSH-curve?
Net positive suction head
4: How much of the world’s total volume of water is fresh water?
72%
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4: How much of the world’s total volume of water is fresh water?
About 50%
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4: How much of the world’s total volume of water is fresh water?
3.5%
5: In a pump curve, head, power consumption, efficiency and NPSH are shown as a function of…
Performance
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5: In a pump curve, head, power consumption, efficiency and NPSH are shown as a function of…
The type of pump
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5: In a pump curve, head, power consumption, efficiency and NPSH are shown as a function of…
Flow
6: In what year was the centrifugal pump invented?
1689
6: In what year was the centrifugal pump invented?
1789
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6: In what year was the centrifugal pump invented?
1923
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7: What does QH curve show?
Flow at a given head
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7: What does QH curve show?
Head at a given flow
7: What does QH curve show?
Overall efficiency
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8: At the very highest level, what are the two main types of pump?
Vertical pumps and horizontal pumps
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8: At the very highest level, what are the two main types of pump?
Positive displacement pumps and centrifugal pumps
8: At the very highest level, what are the two main types of pump?
Submersible and sanitary pumps
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