What is the primary purpose of taps in transformers?

The primary purpose of taps in transformers is to maintain rated output voltage. Taps are additional connection points on the transformer windings that allow for adjustments in voltage levels. By changing the connection point to one of these taps, a transformer can better match the output voltage to the load requirements or compensate for variations in the supply voltage. This capability is crucial in ensuring that the transformer delivers a consistent and stable voltage to the connected load, even as conditions fluctuate.

Taps can also play a significant role in adjusting the transformer's performance to account for voltage drop in long transmission lines or load changes, thus ensuring reliability in electrical systems. The other options do not accurately reflect the primary function of taps; rather, they either describe secondary functions or misinterpret the operational role of taps in transformer design and application.