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  1. Tellegen's Theorem
  2. Reciprocity Theorem
  3. Thevenin's Theorem
  4. Norton's Theorem
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Option 1 : Tellegen's Theorem

Different theorems used in the electrical network:

1.) Tellegen's Theorem

  • It states that the power consumed by all the passive elements is always equal to the power delivered by all active elements.
  • Hence, this theorem is a manifestation of the Law of Conservation of Energy.

2.) Reciprocity Theorem:

  • It states that if the source and response of an electrical network are interchanged, then the parameters of the circuit remain the same.

3.) Thevenin's Theorem:

  • It states that any linear circuit containing several sources and resistances can be replaced by just one single voltagesource in series with a single resistance connected across the load.

4.) Norton's Theorem:

  • It states that any linear circuit containing several sources and resistances can be replaced by just one single current source in paralledwith a single resistance connected across the load.
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