Question 1 of 3
Basic

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

Question 2 of 3
Basic

In what year was the centrifugal pump invented?

Question 3 of 3
Basic

Can centrifugal pumps be connected directly to an asynchronous motor?

Question 3 of 3
Basic

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1: How much of the world’s total volume of water is fresh water?
72%
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1: How much of the world’s total volume of water is fresh water?
About 50%
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1: How much of the world’s total volume of water is fresh water?
3.5%
2: In what year was the centrifugal pump invented?
1689
2: In what year was the centrifugal pump invented?
1789
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2: In what year was the centrifugal pump invented?
1923
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3: Can centrifugal pumps be connected directly to an asynchronous motor?
Yes
3: Can centrifugal pumps be connected directly to an asynchronous motor?
No
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3: Can centrifugal pumps be connected directly to an asynchronous motor?
Only in the case of immersible pumps
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