There are generally three types of positive displacement pumps that are in use today: the vane pump, the ____ pump, and the piston pump.
A) centrifugal
B) impeller
C) gear
D) radial axis

Question

Quizplus · Accepted Answer

The vane pump and piston pump are both types of rotary positive displacement pumps, while the centrifugal pump is a type of dynamic pump. The impeller pump is not a commonly used term in the industry and may refer to a specific type of pump utilizing an impeller as opposed to a rotary or reciprocating mechanism. Therefore, the gear pump is the third type of positive displacement pump in common use.

There Are Generally Three Types of Positive Displacement Pumps That