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

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

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 8 of 8 Basic

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

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: 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: Are axial flow impellers used in closed pump designs?
A: No
Correct
Q: Can centrifugal pumps be connected directly to an asynchronous motor?
A: Yes
Correct
Q: What makes mixed flow impellers different from axial flow impellers?
A: They subject the fluid to a degree of radial flow
Correct
Q: What does QH curve show?
A: Head at a given flow
Correct
Q: What does ‘NPSH’ stand for in the NPSH-curve?
A: Net positive suction head