Which of the following will improve
the mutual coupling between primary and secondary circuit?
Transformer oil of high breakdown
voltage
High reluctance magnetic core
Winding material of high resistivity
Low reluctance magnetic core
Low reluctance magnetic core
●Magnetic
reluctance is used for analysis of magnetic circuits. It is equivalent to
resistance in an electrical circuit but instead of dissipating electric energy
it stores magnetic energy.
●Lower
the reluctance, less the opposition to flux therefore more and more flux can
pass through the core of transformer.
Hence, the correct option is (D).
&Key Points:-
Transformer
core are made up of magnetic steel having high permeability to magnetic flux.
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