8 questions Basic

ECADEMY test

36 - Basic Principles and Pump Types

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

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Question 1 of 8 Basic

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

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

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

Question 7 of 8 Basic

In what year was the centrifugal pump invented?

Question 8 of 8 Basic

Can centrifugal pumps be connected directly to an asynchronous motor?

Question 8 of 8 Basic

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Correct
Q: What kind of pumps would normally NOT have a radial flow impeller?
A: Sewage treatment pumps
Correct
Q: In a pump curve, head, power consumption, efficiency and NPSH are shown as a function of…
A: Flow
Correct
Q: What does ‘NPSH’ stand for in the NPSH-curve?
A: Net positive suction head
Correct
Q: How much of the world’s total volume of water is fresh water?
A: 3.5%
Correct
Q: At the very highest level, what are the two main types of pump?
A: Positive displacement pumps and centrifugal pumps
Correct
Q: What does QH curve show?
A: Head at a given flow
Correct
Q: In what year was the centrifugal pump invented?
A: 1689
Correct
Q: Can centrifugal pumps be connected directly to an asynchronous motor?
A: Yes