In this article, we will see Star Delta Conversion and Delta Star Conversion. This conversion is widely used in the analysis of 3-phase electric power circuits. In simple words, it is used for the simplification of an electrical circuit in order to easily analyse the circuit. Star Delta Conversion In this section, we will see … Read more
Reciprocity Theorem In a linear, bilateral time-varying network, the ratio between response to the excitation remains same even after the position of response and excitation are interchanged. OR In a very lucid way, we can explain the reciprocity theorem as when the places of voltage and current source in any network are interchanged, the amount … Read more
When two or more resistances are connected end to end consecutively, they are said to be connected in series. Figure 1 shows four resistances R1, R2, R3 and R4 which are connected in series. Resistances in series is denoted pictorially as shown in figure 2. According to the law of combination of resistances in series, … Read more
Electrical energy sources are majorly classified into two classes i.e. Independent sources and Dependent sources. The independent sources are further divided into two types namely voltage source and the current source. There are four types of the dependent sources. They are as follows 1. Voltage Controlled Voltage Source (VCVS) 2. Voltage Controlled Current Source (VCCS) 3. … Read more
Active Power The actual amount of power being used, or dissipated, in a circuit is called True power or Active Power or real power. It is measured in watt (W) or kilowatt (kW) or MW. It is symbolized by the capital letter P. It has been seen that the power is consumed only in resistance. Reactive … Read more
In electrical circuits, the classification of circuit elements can be classified as Linear and non-linear element Active and Passive element Unilateral and Bilateral element Time-variant and Time invariant element Linear and non-linear element An element or a system is said to be linear if it obeys the principles of additive and homogeneity properties. For linear elements, … Read more
Most of us do not know how to connect a battery either in series or parallel. A series connection is done when a greater voltage is needed. A parallel connection is done when a greater capacity is needed. Batteries joined in Series Same voltage i.e. V = 6 Volts Capacity of both batteries are added i.e. … Read more
Ground or earth in a main (AC power) electrical wiring system is a conductor that exists primarily to help protect against faults and which in normal operation does not carry current. Neutral is a circuit conductor that may carry current in normal operation, and which is usually connected to earth. In-house wiring, it is the … Read more
Tellegen’s Theorem This theorem states that algebraic sum of the power’s in any circuit (linear, non-linear, unidirectional, bi-directional, time-invariant and time-variant elements) at any instant is zero. It was published in 1952 by Bernard Tellegen. For verification of Tellegen’s theorem, KVL and KCL equations are used. Tellegen’s theorem works based on the principle of the law of … Read more
Millman’s Theorem Case-1 The theorem states that if several ideal voltage sources V1, V2, V3,……., Vn in series with resistances R1, R2, R3,…….., Rn, are connected in parallel then the circuit may be replaced by a single voltage source Vout in series with the resistance Req. Let us consider a circuit having three sources i.e. n=3. … Read more