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FAQs on Maximum Power Transfer Theorem - GATE Notes & Videos for Electrical Engineering - Electrical Engineering (EE)

1. What is Millman's Theorem?
Ans. Millman's Theorem is a technique used in electrical circuit analysis to simplify complex circuits with multiple parallel branches. It allows us to calculate the voltage and current at a specific point in the circuit by treating the parallel branches as a single equivalent resistance and voltage source.
2. How does Millman's Theorem work?
Ans. Millman's Theorem works by finding the equivalent voltage source and equivalent resistance for the parallel branches in the circuit. The equivalent voltage source is the sum of all the individual branch voltages divided by the sum of the branch resistances. The equivalent resistance is the reciprocal of the sum of the reciprocals of the branch resistances. Once the equivalent voltage source and resistance are determined, the voltage and current at a specific point can be calculated using Ohm's Law.
3. What are the limitations of Millman's Theorem?
Ans. Millman's Theorem has a few limitations. It can only be used for circuits with parallel branches, and all the branches must have a voltage source. It cannot be applied to circuits with series branches or branches without a voltage source. Additionally, Millman's Theorem assumes that the circuit is in a steady-state and does not consider transient or time-varying behavior.
4. What is Tellegen's Theorem?
Ans. Tellegen's Theorem is a fundamental principle in electrical circuit theory that states that the total power entering a network is equal to the sum of the power dissipated, stored, and delivered by the network elements. It provides a mathematical relationship between the voltages and currents in a circuit.
5. How can Tellegen's Theorem be applied in circuit analysis?
Ans. Tellegen's Theorem can be applied in circuit analysis to determine the power balance in a circuit. By calculating the power dissipated, stored, and delivered by each element in the circuit, we can verify if the total power entering the circuit is equal to the sum of these individual powers. This theorem helps in understanding the energy flow within a circuit and can be used to optimize circuit design for maximum power transfer or efficiency.
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