Tellegen's theorem applied to mechanical, fluid and thermal systems

The application of Tellegen's theorem to mechanical, fluid and thermal systems was discussed. It was found that Tellegen's theorem was linear, nonlinear, reciprocal or nonreciprocal and time variant or time invariant in nature. Tellegen's theorem stated that the total power delivered to all components of an electrical network was zero and this had resulted that the sum of the product of voltages and currents should be zero. The results show that Tellegen's theorem could be extended to other type of systems and also to discrete systems used in discrete signal processing.