Consider the following statements: (a) Tellegen’s theorem is applicable to any lumped networks (b) The reciprocity theorem is applicable to linear bilateral networks (c) Thevenin’s theorem is applicable to two - terminal linear active networks (d) Norton’s theorem is applicable to two - terminal linear active networks Which of the above statements are correct?

Option 3 : (a), (b), (c) and (d)

Tellegen’s Theorem states that the summation of power delivered is zero for each branch of any lumped network at any instant of time.

• This theorem is independent of the network elements i.e. applicable for any lump system that has active, passive & time-variant elements. (linear & non-linear as well)
• This is mainly used in designing of fillers in signal processing.

Reciprocity Theorem states that “in a linear & bilateral network, the ratio between the response to excitation remains the same even after interchanging the position of response & excitation.”

• Applicable in linear & bilateral network.
• The network should have a single source only.
• Applicable for both DC & AC circuits.

Thevenin’s Theorem: states that” Any linear network can be replaced by just one single voltage in series with a single resistance connected across the load.”

Norton’s Theorem :

Norton's Theorem states that” Any linear network can be replaced by just one single current source in parallel to a single resistance connected across the load.