In a centrifugal water pump, what is the result of the impeller throwing coolant outward?

In a centrifugal water pump, what is the result of the impeller throwing coolant outward?

• A. Recycles coolant back into the reservoir
• B. Disperses coolant evenly into the coolant reservoir
• C. Throws coolant at high velocity into the surround casing
• D. Stores coolant in an auxiliary chamber

Answer: (C)

In a centrifugal pump, the impeller transfers energy to the coolant by pushing it outward due to centrifugal force. This outward throw gives the coolant a high exit velocity as it leaves the impeller and enters the pump casing (volute). The surrounding casing then channels that high-velocity flow toward the discharge path, converting some of that kinetic energy into pressure for circulation through the cooling system. So the coolant is expelled at high velocity into the surround casing, which is exactly why this option is correct. The coolant isn’t recycled back into the reservoir, dispersed evenly in the reservoir, or stored in an auxiliary chamber by the impeller’s action.

In a centrifugal pump, the impeller transfers energy to the coolant by pushing it outward due to centrifugal force. This outward throw gives the coolant a high exit velocity as it leaves the impeller and enters the pump casing (volute). The surrounding casing then channels that high-velocity flow toward the discharge path, converting some of that kinetic energy into pressure for circulation through the cooling system. So the coolant is expelled at high velocity into the surround casing, which is exactly why this option is correct. The coolant isn’t recycled back into the reservoir, dispersed evenly in the reservoir, or stored in an auxiliary chamber by the impeller’s action.