Cathodic Protection Tester Practice Exam

What is the primary function of the secondary winding in a transformer?

1. The supply of high voltage

2. The unit to which voltage is to be supplied

3. The main source of current

4. The measurement of resistance

The correct answer is: The unit to which voltage is to be supplied

The primary function of the secondary winding in a transformer is indeed to provide a means of supplying voltage to the load. The secondary winding is responsible for converting the energy that has been transformed within the primary winding into the required output voltage. This output can be at a different voltage level than the input, depending on the turns ratio between the primary and secondary windings. In the case of a transformer, the primary winding receives electrical energy at the input voltage, while the secondary winding can step up or step down this voltage as per the design of the transformer. This ability to alter voltage levels is essential for a variety of applications, including power distribution and various electrical devices. The other options do not accurately describe the primary function of the secondary winding. While it does play a role in the overall system of voltage transformation, it does not solely supply high voltage, serve as a source of current in the conventional sense, or measure resistance. Instead, it is fundamentally about providing an output voltage suited to the needs of the connected circuit or device.