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What is a Transformer Breather? A transformer breather (silica gel breather) is a simple device that keeps moisture out of the transformer. We fit it to the pipe coming out from the transformer conservator tank. When the transformer heats up, the oil expands. When it cools down, the oil contracts. This creates a breathing action. … Read more
The vector diagram shows the phase relationships clearly. It reveals how currents and voltages interact physically. Moreover, it guides us in circuit element placement. Each vector represents one specific circuit component. Therefore, the diagram becomes our blueprint for the equivalent circuit of a transformer. Without it, we cannot understand parameter connections properly. Vector Diagram No … Read more
Power stations generate electric power. Electrical power transmission lines transmit the generated power to far places. The resistance and reactance of the line cause a voltage drop in the power. The Voltage Regulation of Transmission Line is the change in voltage between the sending and receiving ends. What is Voltage Regulation? We express the Voltage … Read more
What is Insulation Resistance? Insulation resistance measures how well an insulating material stops leakage current. We measure this blocking ability in Ohms (Ω). Furthermore, good insulation has very high resistance. In contrast, poor insulation allows current to leak. Obviously, this leakage can cause electric shocks, equipment damage, and fire hazards. Basic Formula of Insulation Resistance … Read more
Skin effect is a phenomenon that occurs in conductors. It mainly occurs while a conductor carries alternating current. Actually, when an alternating current tries to flow through the outer layer of the conductor. The inner portion of the conductor carries much lower current than the outer surface. As a result, the current distribution across the … Read more
Let us try to understand why transmission of electricity requires a high-voltage transmission system. This is essential before discussing the details of an electrical transmission system, Requirement of Electrical Transmission System All the generating stations generate electric power at a low voltage level. Because generating electrical power at a low voltage level is economical. Actually, … Read more
An attraction type moving iron instrument works based on the principle of attraction of a magnetic material towards the coil. Basic Structure Suppose there is a coil. We connect this coil with an electric source. Whenever we inject current into the coil, the coil will become a magnet. Obviously, this magnet attracts any iron pieces … Read more
A resistor is one of the fundamental components in circuits. It limits current flow or divides voltages in the circuit. Although all types of resistors serve the same basic function, different manufacturing methods and materials create distinctions among them. Each type has its unique characteristics suited for specific applications. Differnt Types of Resistors as Follows … Read more
A wire wound resistor consists of a winding of resistive wire wrapped around a non-conductive cylinder. This is the oldest type of resistor. Although we use wire wound resistors these days. Because these resistors provide high accuracy, better stability. Also, they can handle much more power than other types of resistors available for fixed resistor … Read more