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A core type transformer has its windings

  • A.wound on a separate frame away from the core
  • B.arranged with no magnetic core between them
  • C.surrounding the limbs of the core
  • D.surrounded on all sides by the core material

Answer: C

The core is a simple rectangle and the coils encircle its vertical limbs, which makes the winding accessible and the insulation straightforward. A shell type wraps the core around the coils instead and gives better mechanical bracing against short-circuit forces.

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