Final answer:
The usage of a large vacuum pump in evacuating a system increases the speed of evacuation by moving a larger volume of air in a shorter amount of time, leading to a faster decrease in pressure.
Step-by-step explanation:
When evacuating a system, the use of a large vacuum pump would be to increase the speed of evacuation. A larger pump can move a greater volume of air per unit of time, which effectively decreases the pressure faster within a closed system.
This increased speed is similar to the principles of entrainment described in the provided references, where increased fluid speed creates low pressures to move or mix fluids, such as in a Bunsen burner or aspirator. However, in the context of a vacuum pump, it is the air that is being removed to create a vacuum.