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

Centrifugal pumps can be categorised into the following groups…

Question 2 of 8 Basic

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

Question 3 of 8 Basic

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

Question 4 of 8 Basic

Are axial flow impellers used in closed pump designs?

Question 5 of 8 Basic

Can centrifugal pumps be connected directly to an asynchronous motor?

Question 6 of 8 Basic

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

Question 7 of 8 Basic

What makes mixed flow impellers different from axial flow impellers?

Question 8 of 8 Basic

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

Question 8 of 8 Basic

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Q: Centrifugal pumps can be categorised into the following groups…
A: Forward flow, backward flow, static flow
01: Forward flow, backward flow, static flow Your answer
02: Vertical flow, horizontal flow, diagonal flow
03: Radial flow, mixed flow, axial flow
Q: Centrifugal pumps can be categorised into the following groups…
A: Vertical flow, horizontal flow, diagonal flow
01: Forward flow, backward flow, static flow
02: Vertical flow, horizontal flow, diagonal flow Your answer
03: Radial flow, mixed flow, axial flow
Q: Centrifugal pumps can be categorised into the following groups…
A: Radial flow, mixed flow, axial flow
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
02: The type of pump Your answer
03: Flow
Q: In a pump curve, head, power consumption, efficiency and NPSH are shown as a function of…
A: Flow
Q: What does ‘NPSH’ stand for in the NPSH-curve?
A: Net potential surface heat
01: Net potential surface heat Your answer
02: Net peripheral suction height
03: Net positive suction head
Q: What does ‘NPSH’ stand for in the NPSH-curve?
A: Net peripheral suction height
01: Net potential surface heat
02: Net peripheral suction height Your answer
03: Net positive suction head
Q: What does ‘NPSH’ stand for in the NPSH-curve?
A: Net positive suction head
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: Can centrifugal pumps be connected directly to an asynchronous motor?
A: Yes
Q: Can centrifugal pumps be connected directly to an asynchronous motor?
A: No
01: Yes
03: Only in the case of immersible pumps
Q: Can centrifugal pumps be connected directly to an asynchronous motor?
A: Only in the case of immersible pumps
01: Yes
02: No
03: Only in the case of immersible pumps 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 makes mixed flow impellers different from axial flow impellers?
A: Mixed flow impellers deliver higher rotation speeds
01: Mixed flow impellers deliver higher rotation speeds Your answer
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: How much of the world’s total volume of water is fresh water?
A: 72%