What is the difference between a centrifugal pump and a positive displacement pump?
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A
Centrifugal pumps are always larger
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B
A centrifugal pump uses an impeller to impart velocity energy that converts to pressure, while a positive displacement pump traps and moves a fixed volume of fluid per cycle
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C
Positive displacement pumps cannot handle high pressures
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D
Centrifugal pumps have no rotating parts