JB GUPTA QUESTION | DC BASICS & NETWORKS | SSC JE 2019 | CRASH COURSE | BY :- RNADHIR SINGH

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SSC JE CRASH COURSE |Lecture :- 1 |SSC JE | UPPCL JE |

SSC JE CRASH COURSE |Lecture :- 2 |SSC JE | UPPCL JE |

AC FUNDAMENTALS & AC CIRCUIT | SSC JE CRASH COURSE |LECTURE :- 4 |SSC JE | UPPCL JE |

.1. Super Position Theorem
The Superposition theorem is a way to determine the currents and voltages present in a circuit that has multiple sources (considering one source at a time). The superposition theorem states that in a linear network having a number of voltage or current sources and resistances, the current through any branch of the network is the algebraic sum of the currents due to each of the sources when acting independently.

2. Thevenin’s Theorem
Statement: A linear network consisting of a number of voltage sources and resistances can be replaced by an equivalent network having a single voltage source called Thevenin’s voltage (Vthv) and a single resistance called (Rthv).

3. Norton’s Theorem
This theorem states that any linear circuit containing several energy sources and resistances can be replaced by a single constant current generator in parallel with a single resistor.

4. Maximum Power Transfer Theorem
This theorem explains the condition for the maximum power transfer to load under various circuit conditions. The theorem states that the power transfer by a source to a load is maximum in a network when the load resistance is equal to the internal resistance of the source. For AC circuits load impedance should match with the source impedance for maximum power transfer even if the load is operating at different power factors.

5. Reciprocity Theorem
Reciprocity theorem helps to find the other corresponding solution even without further work, once the circuit is analyzed for one solution. The theorem states that in a linear passive bilateral network, the excitation source and its corresponding response can be interchanged.

6. Tellegen’s theorem

This theorem is applicable for circuits with a linear or nonlinear, passive, or active and hysteric or non-hysteric networks. It states that the summation of instantaneous power in the circuit with n number of branches is zero.

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