NERC Health & Safety Institute (HSI) Practice Test 2025 – Comprehensive All-in-One Guide to Exam Success!

When considering the flow of MVAR (Mega Volt Amperes Reactive) in a power system, it is essential to understand the relationship between voltage, power factor, and the directionality of reactive power flow. In this scenario, when power is moving from Station A to Station B, the flow of MVAR will also typically follow in the same direction.

Reactive power is closely linked to the overall power transfer in AC systems, and it supports the voltage levels necessary for delivering active power. When active power moves from one station to another, especially in a transmission system, the reactive power flows along with it to maintain the necessary voltage and support system stability.

While other choices may reference potential scenarios regarding impedance and power angles, they do not accurately reflect the typical behavior of reactive power in the context of power transfer between stations. In this case, the proper understanding of system behavior leads to the conclusion that MVAR will flow from Station A to Station B in alignment with the flow of active power.