In an AC transformer type welding machine, what do we call the magnetic link between the primary and secondary coils?

• A. Magnetization
• B. Core
• C. Inductor
• D. Conductor

Answer: (B)

In an AC transformer type welding machine, the magnetic link between the primary and secondary coils is referred to as the core. The core serves as a pathway for the magnetic flux generated when alternating current flows through the primary coil. This magnetic flux is essential as it induces voltage in the secondary coil through electromagnetic induction, which is the fundamental principle that allows the transformer to function.

The core material is typically made from ferromagnetic substances to enhance the magnetic coupling and minimize energy losses. A well-designed core effectively concentrates the magnetic field, facilitating efficient transfer of energy between the coils.