A decrease in voltage can be expected immediately when which component is taken out of service?

A decrease in voltage can be expected immediately when a capacitor bank is taken out of service because capacitor banks are primarily used to provide reactive power support in the electrical system. When operational, they supply reactive power, which helps to maintain voltage levels and improve the voltage stability of the electrical network.

If a capacitor bank is removed, this immediate loss of reactive power results in a reduction in voltage at the nodes connected to that capacitor bank. This is particularly critical in systems where capacitor banks are used to counteract the inductive effects of loads or transmission lines.

In contrast, while generators play a significant role in producing active power and also contribute to voltage levels, their effect may not be as immediate or as directly measurable in terms of voltage drop as that of capacitor banks. Transformers also have an essential function in voltage regulation but do not directly inject reactive power like capacitor banks do. Inductors, on the other hand, typically consume reactive power, and while they contribute to voltage drops in certain scenarios, the relationship is less straightforward compared to the immediate voltage effects observed with capacitor banks.