A motor-driven alternator connected to a purely reactive load does not slow down overall, despite consuming energy during the first half of the cycle. This is because the energy consumed is returned in the second half, resulting in no net change in velocity over time. While there may be temporary fluctuations in speed, the alternator maintains its average speed due to the cyclical nature of reactive power. The discussion highlights the distinction between reactive power and real power consumption, emphasizing that reactive loads do not lead to a permanent decrease in alternator speed. Thus, the alternator remains stable in speed when connected to purely reactive loads.
