Question 180General Subjects - 1st Asst/Chief

The correct answer is B) A flow is developed by imparting kinetic energy to the fluid by the rotation of an impeller. This is correct because the basic principle of operation for a centrifugal pump is that the rotating impeller inside the pump casing imparts kinetic energy to the fluid, which then creates a flow. The fluid is accelerated outward from the center of the impeller, and this increase in kinetic energy is what generates the flow. The other options are incorrect: A) Centrifugal pumps can operate in both horizontal and vertical orientations; C) Centrifugal pumps operate best under positive suction pressure conditions; and D) Centrifugal pumps are generally not well-suited for high viscosity fluids, which require more specialized positive displacement pumps.