8 questions Basic

ECADEMY test

36 - Basic Principles and Pump Types

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Question 2 of 8 Basic

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

Question 4 of 8 Basic

4 In what year was the centrifugal pump invented?

Question 5 of 8 Basic

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

Question 6 of 8 Basic

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

Question 8 of 8 Basic

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Correct
Q: Centrifugal pumps can be categorised into the following groups…
A: Radial flow, mixed flow, axial flow
Correct
Q: How much of the world’s total volume of water is fresh water?
A: 3.5%
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: In a pump curve, head, power consumption, efficiency and NPSH are shown as a function of…
A: Flow
Correct
Q: What kind of pumps would normally NOT have a radial flow impeller?
A: Sewage treatment pumps
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 makes mixed flow impellers different from axial flow impellers?
A: They subject the fluid to a degree of radial flow