Thevenin and norton problems and solutions

We know that current select a path with low resistance and a short circuit path is considered as zero resistance. Now apply network reduction techniques and find the network resistance. Add the load resistor in parallel with the above circuit and apply current division rule to find the load current. All Day Efficiency of a Distribution Transformer All-day efficiency or energy efficiency of a transformer is defined by the ratio Know more….

Thus, the internal resistance of the circuit across a-b is 2. The given circuit is thus Thevenised to give.

Example: 6. Thevenise the circuit to the left of terminal x-y in the network shown in figure In the given figure 14,. Let us now deactivate the constant sources. Then If a driving voltage v is now applied at x-y terminals, the input current entering through x terminal being i dc ,. But Obviously,. Example: 7. It is give that when. Thus, R int internal resistance of the given source. Example: 8.

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Next Post Next post: Superposition method — Circuit with two sources. Thevenin's equivalent circuit. To show Thevenin's equivalent circuit we consider a circuit with a complicated passive network driven by an energy source V s. This circuit will be replaced by an equivalent circuit with a voltage source V TH called Thevenin's voltage and impedance R TH called Thevenin's impedance. To calculate Thevenin's voltage at first remove the load. When the load has removed the voltage across AB is equal to the voltage across the resistor R 2.

So the Thevenin's voltage is. Now to calculate Thevenin's impedance at first replace the energy sources with their internal impedance and the load R L also disconnected.

Note: If the internal impedance of the energy sources is given then it will be added to the resistor network.