Which of the following statements is true concerning centrifugal pumps?

Correct Answer: Option C — The flow of liquid is developed by imparting energy due to the rotation of an impeller.

Centrifugal pumps operate on the principle of dynamic energy transfer. The rotating impeller imparts velocity to the fluid, which is then converted to pressure within the casing. Unlike positive displacement pumps, they are not suited for high-viscosity fluids and are typically started with the discharge valve closed.