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, where a rotating impeller imparts velocity to the fluid. This kinetic energy is then converted into pressure head within the pump casing. Unlike positive displacement pumps, they are generally started with the discharge valve throttled or closed to minimize motor load.