Explain the operation of a positive displacement pump.

a. accelerates a specific volume of liquid through centrifugal force.
b. uses a combination of displacement and centrifugal force to move liquid.
c. displaces a specific volume of liquid on every stroke or rotation of the transfer element.
d. axial movement that displaces a specific volume of liquid.


c. displaces a specific volume of liquid on every stroke or rotation of the transfer element.

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