This type of pump generates high velocity water and has relatively low cost and maintenance.

• A. Diaphragm pump
• B. Centrifugal jet pump
• C. Positive displacement pump
• D. Turbine pump

Answer: (B)

The key idea here is identifying a pump type that can push water out with high velocity while remaining simple, affordable, and easy to maintain. A centrifugal jet pump uses an impeller to accelerate water, creating a high-velocity discharge. The jet portion helps with suction and entrains additional water, but the overall design remains straightforward with relatively few moving parts. That simplicity translates to lower initial cost and easier maintenance compared with more complex pump types.

Diaphragm pumps and other positive-displacement pumps rely on flexible diaphragms or hard-walled chambers and seals, which can mean higher wear, pulsating flow, and more maintenance in some services. Turbine pumps are robust and capable of high heads, but they involve more components, alignment, and costs. Jet pumps, and especially centrifugal jet configurations, strike a balance by delivering high velocity without the heavier maintenance footprint, making them the best fit in this scenario.