In a distribution system, which component changes voltage levels as needed?

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Multiple Choice

In a distribution system, which component changes voltage levels as needed?

Voltage levels in a distribution system are changed by transformers. A transformer uses magnetic coupling between windings with a turns ratio, so the secondary voltage is proportional to the primary voltage. This lets power be stepped down from the high distribution or substation voltage to the lower voltages used by customers, and it can also be used to regulate voltage along the feeder via taps. Capacitors provide reactive power and help improve voltage regulation and power factor, but they don’t set the system’s voltage level along the line. Breakers and fuses protect and interrupt circuits; they don’t change the voltage themselves.

Voltage levels in a distribution system are changed by transformers. A transformer uses magnetic coupling between windings with a turns ratio, so the secondary voltage is proportional to the primary voltage. This lets power be stepped down from the high distribution or substation voltage to the lower voltages used by customers, and it can also be used to regulate voltage along the feeder via taps.

Capacitors provide reactive power and help improve voltage regulation and power factor, but they don’t set the system’s voltage level along the line. Breakers and fuses protect and interrupt circuits; they don’t change the voltage themselves.

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