Free Expert Guides on Power Systems, Circuit Design & Electrical Troubleshooting

The wordmeshmeans a smallest loop which is closed one and formed by using circuit components. The mesh must not have any other loop inside it. Like the other network analysis procedures, we can use Mesh Analysis to find out the voltage, current or power through a particular element or elements. Mesh analysis is based on Kirchhoff Voltage Law. We can use Mesh analysis only on planar circuits. The planar circuit is the one which is possible to draw on a plane surface in such a way that no branch p

Current Division RuleWhen current flows through more than one parallel path, each of the paths shares a definite portion of the total current depending upon the impedance of that path.The definite portion of the total current shared by any of the parallel paths can easily be calculated if the impedance of that path and the equivalent impedance of the parallel system are known to us.The rule or formula derived from these known impedances to know the portion of total current through any parallel p

Definition of Nodal AnalysisNodal analysis is a method that provides a general procedure for analyzing circuits using node voltages as the circuit variables. Nodal Analysis is also called the Node-Voltage Method.Some Features of Nodal Analysis are as Nodal Analysisis based on the application of theKirchhoff’s Current Law(KCL). Having ‘n’ nodes there will be ‘n-1’ simultaneous equations to solve. Solving ‘n-1’ equations all the nodes voltages can be obtained. The number of non reference nodes is

What is a Source Transformation?Anelectrical source transformation(or just ”source transformation”) is a method for simplifying circuits by replacing a voltage source with its equivalent current source, or a current source with its equivalent voltage source. Source transformations are implemented usingThévenin’s theoremandNorton’s theorem.Source transformation is a technique used to simplify an electric circuit.We’ll illustrate how this is done with an example.Let’s take a simple voltage source

Network Analysis is a process by which we can calculate different electrical parameters of a circuit element connected in an electrical network. An electrical circuit or network can be complicated too and in a complicated network, we have to apply different methods to simplify the network for determining the electrical parameters. The circuit elements in a network can be connected in different manners, some of them are in series and some of them in parallel. The circuit elements are resistors, c

What is an Essential Node?A node is defined as a point where two or more circuit elements are connected. An essential node is a particular type of node where three or more elements are connected. An essential node is a useful node to consider in circuit analysis.For example, in the below circuit, there is a total of seven nodes. Out of these seven nodes, there are four essential nodes that have been marked in green. The remaining three regular nodes have been marked in red.What is an Essential B

This theorem has been introduced in the year of 1952 by Dutch Electrical Engineer Bernard D.H. Tellegen. This is a very useful theorem in network analysis. According to Tellegen theorem, the summation of instantaneous powers for the n number of branches in an electrical network is zero. Are you confused? Let’s explain. Suppose n number of branches in an electrical network have i1, i2, i3, …………. in respective instantaneous currents through them. These currents satisfy Kirchhoff’s Current Law.Agai

Maximum Power Transfer TheoremSuppose we have a voltage source or battery that’s internal resistance is Ri and a load resistance RL is connected across this battery. Maximum power transfer theorem determines the value of resistance RL for which, the maximum power will be transferred from source to it. Actually the maximum power, drawn from the source, depends upon the value of the load resistance. There may be some confusion let us clear it.Power delivered to the load resistance,To find the maxi

Concept of Compensation TheoremThis theorem is based on one basic concept. According to Ohm’s law, when current flows through any resistor, there would be a voltage drop across the resistor. This dropped voltage opposes the source voltage. Hence voltage drop across a resistance in any network can be assumed as a voltage source acting opposite to the source voltage. The compensation theorem depends upon this concept.Explanation of Compensation TheoremAccording to this theorem, any resistance in a

What is Reciprocal Property?In many electrical networks it is found that if the positions of voltage source and ammeter are interchanged, the reading of ammeter remains the same. It is not clear to you. Let’s explain it in details. Suppose a voltage source is connected to a passive network and an ammeter is connected to other part of the network to indicate the response.Now any one interchanges the positions of ammeter and voltage source that means he or she connects the voltage source at the pa