8 questions Basic

ECADEMY test

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

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

Question 2 of 8 Basic

2 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 7 of 8 Basic

7 Are axial flow impellers used in closed pump designs?

Question 8 of 8 Basic

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Correct
01.
Q: How much of the world’s total volume of water is fresh water?
A: 3.5%
Correct
02.
Q: In a pump curve, head, power consumption, efficiency and NPSH are shown as a function of…
A: Flow
Correct
03.
Q: Sanitary pumps are used in the…
A: Food and beverage industry
Correct
04.
Q: What is a main disadvantage of a centrifugal pump?
A: They cannot create suction by themselves
Correct
05.
Q: What makes semi-axial flow impellers different from axial flow impellers?
A: They subject the fluid to a degree of radial flow
Correct
06.
Q: What kind of pumps would normally NOT have a radial flow impeller?
A: Sewage treatment pumps
Correct
07.
Q: Are axial flow impellers used in closed pump designs?
A: No
Correct
08.
Q: What does QH curve show?
A: Head at a given flow