Use an electrically driven water pump.

Use an electrically driven water pump.

• A. To Decrease Parasitic Drag
• B. To Increase Parasitic Drag
• C. No change
• D. Increases water flow only

Answer: (A)

Electrically driven pumps remove the continuous load of a belt-driven accessory from the engine. Since the pump is powered by the electrical system and can be run only when cooling is needed, the engine no longer has to devote horsepower to spinning the pump all the time. That reduces parasitic drag, making the engine more efficient. So the best takeaway is that using an electrically driven water pump decreases parasitic drag. The other ideas don’t fit because the electric pump doesn’t inherently add load, and while it can adjust flow, its main benefit in this context is the reduction in parasitic drag rather than a guaranteed increase in water flow alone.

Electrically driven pumps remove the continuous load of a belt-driven accessory from the engine. Since the pump is powered by the electrical system and can be run only when cooling is needed, the engine no longer has to devote horsepower to spinning the pump all the time. That reduces parasitic drag, making the engine more efficient. So the best takeaway is that using an electrically driven water pump decreases parasitic drag. The other ideas don’t fit because the electric pump doesn’t inherently add load, and while it can adjust flow, its main benefit in this context is the reduction in parasitic drag rather than a guaranteed increase in water flow alone.