Which pump type is a modified centrifugal pump capable of drawing water from streams, ponds, and wells via suction?

• A. Centrifugal Pump
• B. Submersible Pump
• C. Vertical Turbine Pump
• D. Prefabricated Pump

Answer: (C)

The key idea is that lifting water from surface bodies or down a well requires a pump designed to create suction and deliver that water up a vertical path. A vertical turbine pump is a specialized form of centrifugal pump built to do exactly that: its impellers are arranged on a vertical shaft inside a casing, with water entering from a bottom intake and being lifted up through a discharge line to the surface. The multiple stages add enough energy (head) to push water from depth or from a source with a vertical lift, making it suitable for drawing water from streams, ponds, and wells via suction. This design combines the centrifugal pumping action with a vertical configuration that sits at or near the source, which is why it’s the best fit for suction lift from those kinds of water bodies.

The other options don’t fit as well. A generic centrifugal pump is not inherently built for deep suction lift in wells or for submersion at the source. A submersible pump is designed to operate while submerged and push water up through a discharge line; it isn’t the classic modified centrifugal arrangement intended for suction from surface water bodies or wells. A prefabricated pump is not a specific pump type and lacks the defined features needed for suction lift from streams, ponds, or wells.