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Kirchhoff’s Current Law and Kirchhoff’s Voltage Law are two very important laws for solving electrical circuit networks. We use these laws mostly to solve network problems. Kirchhoff’s Current Law Kirchhoff’s Current Law (KCL) says that the total current entering a node equals the total current leaving the node. Obviously, a node is a point where … Read more
In our previous article, we discussed how an inductor behaves in a DC circuit. In this article, we shall discuss how an inductor behaves in an AC circuit. Suppose there is an inductor. We have connected this inductor across an alternating electrical source. The alternating source generates a pure sinusoidal signal. Now, we shall consider … Read more
The power sector is growing rapidly nowadays. Therefore, we need to increase the capacity of electrical transmission systems to fulfil the rapidly growing demands. The most basic way to increase the transmission capacity is to construct new transmission lines. However, nowadays it become almost impossible to find new corridors for new transmission lines. The increased … Read more
When a corona discharge occurs around a high-voltage conducting part of any equipment or around conductors, RIV appears. The corona discharge is nothing but a partial discharge that happens in the air surrounding a conductor at a high voltage level. This corona discharge creates electromagnetic waves of very high frequency. This high-frequency electromagnetic wave is … Read more
In a vacuum circuit breaker, the arc-quenching mechanism differs from that of an SF6 breaker. In an SF6 circuit breaker, deionized gas continues the arc. Whereas, in a vacuum circuit breaker, the metal vapor created on the contact surface carries the arc current. During the zero crossing of the current, the metal vapour gets condensed. … Read more
An ideal current source is an imaginary source. We use it only for circuit analysis. It is a theoretical concept. An ideal current source supplies a constant current regardless of the load condition. The current does not change with the change in the connected circuit. No matter what circuit we connect, the source always delivers … Read more
In this article, we will discuss the very basic concepts of ideal and practical voltage sources. Voltage Source First, we will discuss the voltage source. Obviously, let us first discuss the ideal voltage source. After that, we will move to the practical voltage source. Ideal Voltage Source An ideal voltage source, as the name indicates, … Read more
Power systems deliver electricity from generation stations to consumer ends. Nowadays, power system networks become very complex. This increased complexity disrupts the voltage and frequency. Hence, the system needs to maintain voltage and frequency to ensure reliable and efficient power flow. For example, changes in load, major faults, switching operations, and renewable energy integration can … Read more
What is a Transformer? A power transformer is a static electrical device. It transforms power from one circuit to another circuit without any direct electrical connection. The working principle of a transformer is based on mutual induction. Ideally, it transforms the entire power without changing its frequency. There are mainly three types of transformers: step-up … Read more
Here, we will discuss the ideal transformer. First, let us understand what an ideal transformer is. An ideal transformer is a transformer that has no losses. The word “ideal” means the transformer operates with 100% efficiency. A transformer becomes 100% efficient only when there is no power loss. Why does power loss occur in a … Read more