8 questions Basic

ECADEMY test

36 - Basic Principles and Pump Types

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Question 4 of 8 Basic

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

Question 5 of 8 Basic

Can centrifugal pumps be connected directly to an asynchronous motor?

Question 7 of 8 Basic

Are axial flow impellers used in closed pump designs?

Question 8 of 8 Basic

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

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: What is a main disadvantage of a centrifugal pump?
A: They cannot create suction by themselves
Correct
Q: At the very highest level, what are the two main types of pump?
A: Positive displacement pumps and centrifugal pumps
Correct
Q: How much of the world’s total volume of water is fresh water?
A: 3.5%
Correct
Q: Can centrifugal pumps be connected directly to an asynchronous motor?
A: Yes
Correct
Q: What does QH curve show?
A: Head at a given flow
Correct
Q: Are axial flow impellers used in closed pump designs?
A: No
Correct
Q: In a pump curve, head, power consumption, efficiency and NPSH are shown as a function of…
A: Flow