Cathodic Protection Tester Practice Exam

What are the two sets of windings in a transformer referred to as?

1. Primary and secondary

2. Main and auxiliary

3. Input and output

4. Source and load

The correct answer is: Primary and secondary

The two sets of windings in a transformer are referred to as primary and secondary because these terms distinctly identify their roles in the operation of the transformer. The primary winding is the coil that receives electrical energy from the supply source and is responsible for generating a magnetic field when an alternating current flows through it. The secondary winding, on the other hand, is the coil that receives electrical energy induced by the magnetic field created by the primary winding. The primary and secondary designations help to clarify the direction of energy flow in the transformer and specify the input (primary) and output (secondary) sides of the transformer. This terminology is standard in electrical engineering and is essential for understanding how transformers function in altering voltage levels and coupling electrical circuits.