In this article we will discuss about:- 1. Meaning of Fuse 2. Metals and Alloys Used for Fuse 3. Types 4. Merits 5. Demerits. Meaning of Fuse: An electric circuit is designed to carry a definite amount of current. If a much greater current passes through the circuit, there may be serious damages. To check […]
Fuse: Types, Merits and Demerits | Electrical Engineering
Article shared by : 
Top 13 Conductors of Electricity | Engineering
Article shared by :
The various electrical conducting materials are discussed as follows: 1. Copper 2. Aluminium 3. Tungsten 4. Iron and Steel 5. Nickel 6. Tin 7. Lead 8. Alloys 9. Carbon and Graphite 10. Molybdenum 11. Platinum 12. Mercury 13. Non-Linear Conductors. 1. Copper: Properties: (i) Its colour is reddish. (ii) It is highly malleable and ductile. […]
Insulating Materials and Its Classification | Electrical Engineering
Article shared by :
In this article we will discuss about:- 1. Introduction to Insulating Materials 2. Characteristics of a Good Insulating Material 3. Classification of Insulating Materials 4. Air Spaces in Insulation 5. Effect of Moisture on Insulation 6. Protection of Insulation against Moisture. Contents: Introduction to Insulating Materials Characteristics of a Good Insulating Material Classification of Insulating […]
List of High Resistivity Materials | Electrical Engineering
Article shared by :
The various high resistivity materials (including alloys) are described below: 1. Tungsten: (i) Hard metal. (ii) Resistivity twice that of aluminium. (iii) Can be drawn into very thin wires (for making filaments). The thinner the tungsten wire, the greater is its tensile strength. (iv) In the atmosphere or inert gas (Nitrogen, Argon etc.) or in […]
List of Electrical Materials | Engineering
Article shared by :
Here is a list of popular electrical materials. 1. Materials of Low Resistivity and High Conductivity: These materials should have the least possible electrical conductivity. They are employed for making conductors for all kinds of windings required in electrical machines, apparatus and devices, as well as for transmission and distribution of electrical energy. Requirements of […]
Semiconductors: Atomic Structure and Types | Electrical Engineering
Article shared by :
Semiconductors are solid materials, either non-metallic elements or compounds, which allow electrons to pass through them so that they conduct electricity in much the same way as a metal. Characteristics of Semiconductors: Semiconductors possess the following characteristics: 1. The resistivity is usually high. 2. The temperature co-efficient of resistance is always negative. 3. The contact […]
Properties of Insulating Materials | Electrical Engineering
Article shared by :
The properties of insulating materials are enumerated and discussed as under: 1. Electrical Properties 2. Thermal Properties 3. Chemical Properties 4. Mechanical Properties. 1. Electrical Properties of Insulating Materials: i. Insulation Resistance: It may be defined as the resistance between two conductors (or systems of conductors) usually separated by insulating materials. It is the total […]
Ferroelectric Materials and Its Applications | Electrical Engineering
Article shared by :
In this article we will discuss about:- 1. Introduction to Ferroelectric Materials 2. Common Ferroelectric Materials 3. Properties of Ferroelectric Materials in Static Fields 4. Spontaneous Polarisation 5. Applications of Ferroelectric Materials 6. Anti-Ferroelectric Materials 7. Permanent Electric Materials. Introduction to Ferroelectric Materials: If the centre of gravity of the positive and negative charges in […]
Operation of Induction Type Overcurrent Relay | Electrical Engineering
Article shared by : 
An induction type overcurrent relay giving inverse-time operation with a definite minimum time characteristic is shown in Fig. 3.25. It consists essentially of an ac energy meter mechanism with slight modification to give required characteristics. The relay has two electromagnets. The upper electromagnet has two windings, one of these is primary and is connected to […]
Phase Comparators and Its Types | Devices | Electrical Engineering
Article shared by :
Phase comparison technique is the most widely used technique for all practical directional, distance, differential and carrier relays. In a phase comparator, the operation of the relay takes place when the phase relation between two inputs S1 and S2 varies within certain specified limits. Both inputs must exist for an output to occur; ideally, operation […]