8 questions Basic

### 36 - Basic Principles and Pump Types

This course test contains 8 questions and can be retaken at any time.

You must answer all questions correctly to pass the test and complete the course.

Question 1 of 8 Basic

What makes mixed flow impellers different from axial flow impellers?

Question 2 of 8 Basic

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

Question 3 of 8 Basic

What is a main disadvantage of a centrifugal pump?

Question 4 of 8 Basic

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

Question 5 of 8 Basic

Are axial flow impellers used in closed pump designs?

Question 6 of 8 Basic

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

Question 7 of 8 Basic

What does QH curve show?

Question 8 of 8 Basic

In what year was the centrifugal pump invented?

Question 8 of 8 Basic

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Q: What makes mixed flow impellers different from axial flow impellers?
A: Mixed flow impellers deliver higher rotation speeds
02: They subject the fluid to a degree of radial flow
03: They’re not nearly as good as a fully axial flow impeller
Q: What makes mixed flow impellers different from axial flow impellers?
A: They subject the fluid to a degree of radial flow
Q: What makes mixed flow impellers different from axial flow impellers?
A: They’re not nearly as good as a fully axial flow impeller
01: Mixed flow impellers deliver higher rotation speeds
02: They subject the fluid to a degree of radial flow
03: They’re not nearly as good as a fully axial flow impeller Your answer
Q: What kind of pumps would normally NOT have a radial flow impeller?
A: Circulating pumps
02: Immersible pumps
03: Sewage treatment pumps
Q: What kind of pumps would normally NOT have a radial flow impeller?
A: Immersible pumps
01: Circulating pumps
03: Sewage treatment pumps
Q: What kind of pumps would normally NOT have a radial flow impeller?
A: Sewage treatment pumps
Q: What is a main disadvantage of a centrifugal pump?
A: They require a lot of maintenance
02: They contain a lot of moving parts
03: They cannot create suction by themselves
Q: What is a main disadvantage of a centrifugal pump?
A: They contain a lot of moving parts
01: They require a lot of maintenance
03: They cannot create suction by themselves
Q: What is a main disadvantage of a centrifugal pump?
A: They cannot create suction by themselves
Q: In a pump curve, head, power consumption, efficiency and NPSH are shown as a function of…
A: Performance
02: The type of pump
03: Flow
Q: In a pump curve, head, power consumption, efficiency and NPSH are shown as a function of…
A: The type of pump
01: Performance
03: Flow
Q: In a pump curve, head, power consumption, efficiency and NPSH are shown as a function of…
A: Flow
Q: Are axial flow impellers used in closed pump designs?
A: Yes
02: Sometimes
03: No
Q: Are axial flow impellers used in closed pump designs?
A: Sometimes
01: Yes
03: No
Q: Are axial flow impellers used in closed pump designs?
A: No
Q: What does ‘NPSH’ stand for in the NPSH-curve?
A: Net potential surface heat
02: Net peripheral suction height
Q: What does ‘NPSH’ stand for in the NPSH-curve?
A: Net peripheral suction height
01: Net potential surface heat
Q: What does ‘NPSH’ stand for in the NPSH-curve?
Q: What does QH curve show?
A: Flow at a given head
02: Head at a given flow
03: Overall efficiency
Q: What does QH curve show?
A: Head at a given flow
Q: What does QH curve show?
A: Overall efficiency
01: Flow at a given head
02: Head at a given flow