Electrical Engineering | Engineering Notes India

Insulating Materials and Its Classification | Electrical Engineering

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 Materials Air Spaces in Insulation [...]

By Roshni|2018-04-21T07:54:26+05:30April 21, 2018|Insulating Materials|Comments Off

List of High Resistivity Materials | Electrical Engineering

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 vacuum, tungsten can be readily [...]

By Roshni|2018-04-21T07:54:26+05:30April 21, 2018|Materials|Comments Off

List of Electrical Materials | Engineering

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 Materials of High Conductivity: The [...]

By Roshni|2018-04-21T07:54:26+05:30April 21, 2018|Materials|Comments Off

Semiconductors: Atomic Structure and Types | Electrical Engineering

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 between semiconductor and a metal [...]

By Roshni|2018-04-21T07:54:26+05:30April 21, 2018|Semiconductors|Comments Off

Properties of Insulating Materials | Electrical Engineering

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 resistance in respect of two [...]

By Roshni|2018-04-21T07:54:26+05:30April 21, 2018|Insulating Materials|Comments Off

Ferroelectric Materials and Its Applications | Electrical Engineering

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 a body do not coincide [...]

By Roshni|2018-04-21T07:54:26+05:30April 21, 2018|Ferroelectric Materials|Comments Off

Fuse: Types, Merits and Demerits | Electrical Engineering

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 it, a length of a [...]

By Roshni|2018-04-21T07:54:26+05:30April 21, 2018|Fuse|Comments Off

Top 13 Conductors of Electricity | Engineering

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. (iii) It can be cast, [...]

By Roshni|2018-04-21T07:54:26+05:30April 21, 2018|Conductors|Comments Off

Static Relays: Need and Limitations | Devices | Electrical Engineering

In this article we will discuss about:- 1. Meaning of Static Relays 2. Need for Static Relays 3. Essential Components 4. Advantages 5. Limitations. Contents: Meaning of Static Relays Need for Static Relays Essential Components of Static Relays Advantages of Static Relays Limitations of Static Relays 1. Meaning of Static Relays: A static relay refers to a relay in which [...]

By Shanaya|2018-03-07T08:16:34+05:30March 7, 2018|Static Relays|Comments Off

Classification of Static Relays | Devices | Electrical Engineering

Static relays are classified according to the type of the measuring unit or comparator as follows: 1. Electronic Relays 2. Transductor (Magnetic Amplifier Relays) 3. Rectifier Bridge Relays 4. Transistor Relays 5. Hall Effect Relays 6. Gauss Effect Relays. 1. Electronic Relays: These were the first to be developed in the series of static relays. Fitzgerald presented a carrier current [...]

By Shanaya|2018-03-07T08:16:34+05:30March 7, 2018|Static Relays|Comments Off

Tag Archives | Electrical Engineering