1. Tellegen’s theorem is applicable to

1. linear networks only
2. non-linear network only
3. both linear and non-linear networks
4. neither linear nor non-linear networks

2. Which one of the following is applicable to any network linear or non-linear, active or passive, time-varying or time-invariant as long as Kirchhoff’s laws are not violated?

1. Tellegen’s theorem
2. Reciprocity theorem
3. Maximum power transfer theorem
4. Superposition theorem