Solid Dielectric Materials and Composites Materials: A good solid dielectric should have some of the properties mentioned earlier for gases and liquids and it should also possess good mechanical and bonding strengths. Many organic and inorganic materials are used for high voltage insulation purposes. Widely used inorganic materials are ceramics and glass. The most widely […]
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Breakdown in Liquid Dielectrics: Liquid are used in high voltage equipment to serve the dual purpose of insulation and heat condition. They have the advantage that a puncture path is self-healing. Temporary failures due to overvoltage are reinsulated quickly by liquid flow to the attacked area. However, the products of the discharges may deposit on
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Classification of Fluids: Classification of Fluids are as follows. Ideal fluids and Real or Practical fluids. Newtonian fluids and Non-Newtonian fluids. 1 .Ideal Fluids: Ideal fluids are having following properties. It is incompressible. It has zero viscosity. Shear force is zero when the fluid is in motion i.e. No resistance is offered to the motion of
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PN Junction Semiconductor: Two blocks of PN Junction Semiconductor material are represented in Fig. 1-17; one block is p-type material, and the other is n-type. The small circles in the p-type material represent holes, which are the majority charge carriers in p-type. The dots in the n-type material represent the majority charge carrier free electrons
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P Type and N Type Semiconductor: Doping : Pure semiconductor material is known as intrinsic material. Before intrinsic material can be used for device manufacture, impurity atoms must be added to improve its conductivity. The process of adding the atoms is termed doping. Two different types of doping are possible; donor doping, and acceptor doping.
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Conduction in Solids: Conduction in Solids or any given material occurs when an applied voltage causes electrons within the material to move in a desired direction. This may be due to one or both of two processes; Electron Motion and Hole Transfer. In electron motion, free electrons in the Conduction band are moved under the
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Structure of Power System of Energy Electric System: An Structure of Power System, even the smallest one, constitutes an electric network of vast complexity. The one factor that determines the system structure more than any others is system size. We shall not here enter into a discussion of the reasons of economical, political, historical, and
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Energy Efficiency Definition: Energy Efficiency is available in various forms from different natural sources such as pressure head of water, chemical energy of fuels, nuclear energy of radioactive substances etc. All these forms of energy can be converted into electrical energy by the use of suitable arrangement. In this process of conversion, some energy is
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Unit of Energy | Fundamentals of Energy: The capacity of an agent to do work is known as its energy. The most important forms of Unit of Energy are Mechanical energy, Electrical energy and Thermal energy. Different units have been assigned to various forms of energy. However, it must be realized that since mechanical, electrical
Different Types of Energy Sources: Since electrical energy is produced from energy available in various forms in nature, it is desirable to look into Different Types of Energy Sources. These Energy Sources are : The Sun The Wind Water Fuels Nuclear energy Out of these sources, the energy due to Sun and wind has not
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