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Questions and Answers
According to Thévenin's theorem, what can a linear electrical network containing only voltage sources, current sources, and resistances be replaced by at terminals A–B?
According to Thévenin's theorem, what can a linear electrical network containing only voltage sources, current sources, and resistances be replaced by at terminals A–B?
- An equivalent combination of a current source and a resistance
- An equivalent combination of a voltage source and a capacitor
- An equivalent combination of a voltage source and a resistance (correct)
- An equivalent combination of a current source and an inductor
What is the equivalent voltage Vth obtained at terminals A–B of the network when terminals A–B are open circuited?
What is the equivalent voltage Vth obtained at terminals A–B of the network when terminals A–B are open circuited?
- The voltage obtained at terminals A–B of the network with terminals A–B open circuited (correct)
- The sum of voltage sources in the circuit
- The voltage obtained at terminals A–B of the network with terminals A–B short circuited
- The difference between voltage sources in the circuit
What is the equivalent resistance Rth in Thévenin's theorem?
What is the equivalent resistance Rth in Thévenin's theorem?
- The sum of all resistances in the circuit
- The resistance that the circuit between terminals A and B would have if all ideal voltage sources were replaced by a short circuit and all ideal current sources were replaced by an open circuit (correct)
- The difference between all resistances in the circuit
- The resistance that the circuit between terminals A and B would have if all ideal voltage sources were replaced by an open circuit and all ideal current sources were replaced by a short circuit
In circuit theory terms, what does Thévenin's theorem allow any one-port network to be reduced to?
In circuit theory terms, what does Thévenin's theorem allow any one-port network to be reduced to?
How does Thévenin's theorem apply to frequency domain AC circuits consisting of reactive (inductive and capacitive) and resistive impedances?
How does Thévenin's theorem apply to frequency domain AC circuits consisting of reactive (inductive and capacitive) and resistive impedances?
Study Notes
Thévenin's Theorem
- A linear electrical network containing voltage sources, current sources, and resistances can be replaced by an equivalent circuit consisting of a single voltage source and series resistance connected to a load.
- The equivalent voltage (Vth) is obtained by calculating the open-circuit voltage at terminals A-B when they are open-circuited.
- The equivalent resistance (Rth) is the total resistance measured across the terminals A-B when all voltage sources are turned off.
- Thévenin's theorem allows any one-port network to be reduced to a simple series circuit consisting of a voltage source and a resistance.
- The theorem applies to frequency domain AC circuits consisting of reactive (inductive and capacitive) and resistive impedances, enabling the simplification of complex circuits for analysis.
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Description
Test your knowledge of Thévenin's theorem as applied to direct-current resistive circuits. This theorem allows for the simplification of complex networks into equivalent circuits, enhancing the analysis and design process.
