In transformer terminology, which winding is connected to the incoming power supply?

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Multiple Choice

In transformer terminology, which winding is connected to the incoming power supply?

Explanation:
The winding connected to the incoming power supply is the primary winding. This winding is hooked up to the source to establish the magnetic field in the core. As current flows through the primary, it creates a changing magnetic flux that induces voltage in the other windings through mutual coupling. The secondary winding is where the transformed voltage appears for the load, and any tertiary winding, if present, serves auxiliary purposes. The neutral concept isn’t the input connection in standard transformer terminology.

The winding connected to the incoming power supply is the primary winding. This winding is hooked up to the source to establish the magnetic field in the core. As current flows through the primary, it creates a changing magnetic flux that induces voltage in the other windings through mutual coupling. The secondary winding is where the transformed voltage appears for the load, and any tertiary winding, if present, serves auxiliary purposes. The neutral concept isn’t the input connection in standard transformer terminology.

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