What device is used to convert mechanical energy to hydraulic energy within the liquid being lifted?

What device is used to convert mechanical energy to hydraulic energy within the liquid being lifted?

• A. Hydraulic Motor
• B. Centrifugal Pump
• C. Turbine
• D. Positive Displacement Pump

Answer: (B)

The key idea is turning mechanical energy into hydraulic energy to move the liquid. A centrifugal pump does this by using a spinning impeller connected to a motor; as the impeller blades fling the liquid outward, they transfer energy to the fluid, increasing its velocity and pressure. This transfer raises the liquid’s hydraulic energy, enabling it to be lifted through the system. The other devices operate on different energy directions or mechanisms. A hydraulic motor takes hydraulic energy and converts it into mechanical motion, not the other way around. A turbine uses flowing hydraulic energy to drive a shaft, again converting energy from the fluid to motion. A positive displacement pump also converts mechanical energy to hydraulic energy, but it does so by trapping fixed volumes of fluid and pushing them through, which yields a different flow and head characteristics than a centrifugal pump. For lifting large volumes with continuous flow, the centrifugal pump is the appropriate choice because it efficiently transfers mechanical energy to the moving liquid to create the needed pressure and flow.

The key idea is turning mechanical energy into hydraulic energy to move the liquid. A centrifugal pump does this by using a spinning impeller connected to a motor; as the impeller blades fling the liquid outward, they transfer energy to the fluid, increasing its velocity and pressure. This transfer raises the liquid’s hydraulic energy, enabling it to be lifted through the system.

The other devices operate on different energy directions or mechanisms. A hydraulic motor takes hydraulic energy and converts it into mechanical motion, not the other way around. A turbine uses flowing hydraulic energy to drive a shaft, again converting energy from the fluid to motion. A positive displacement pump also converts mechanical energy to hydraulic energy, but it does so by trapping fixed volumes of fluid and pushing them through, which yields a different flow and head characteristics than a centrifugal pump. For lifting large volumes with continuous flow, the centrifugal pump is the appropriate choice because it efficiently transfers mechanical energy to the moving liquid to create the needed pressure and flow.