A shell-type transformer has

A shell-type transformer has

Right Answer is:

Reduce magnetic leakage


Here at the time of production of flux it simultaneously cuts the secondary coil with the least amount of leakage and produces the necessary output voltage.

Shell Type Transformer

  • When the primary and secondary windings are encircled by the magnetic material, the transformer is referred to as a shell-type transformer.
  • In shell-type construction, there are two parallel magnetic paths into which the flux from the central limb can divide.
  • The primary and secondary windings are wound on the central limb one above the other. This provides a better magnetic coupling between the primary and secondary windings and reduces the magnetic leakage from the core.

  • Shell-type transformer construction features a short magnetic path and a longer mean length of the electrical turn.
  • The shell-form transformer has a larger core area and a smaller number of winding turns than the core-form of the same output and performance.
  • Additionally, the shell form generally has a larger ratio of steel to copper than an equivalently rated core-form transformer.
  • The core type has a longer mean length of the magnetic flux but a shorter mean length for the winding coils and so it is better suited for very high voltage transformers which require a large number of turns in their windings and also, it offers better scope for insulation and its inspection.
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