what is Coulomb’s Law?

During the 18th century a French scientist, Charles A. Coulomb, studied fields of force that surround charged bodies. Coulomb discovered that charged bodies attract or repel each other with a force that is directly proportional to the product of the charges, and inversely proportional to the square of the distance between them. Today we call this Coulomb.s Law of Charges.

what is the difference between a conductor and insulator?

The difference between the conductor and insulator is based up on amount of free electrones.An electric current is produced when free electrons move from one atom to the next. Materials that permit many electrons to move freely are called conductors. Copper, silver, aluminum, zinc, brass, and iron are considered good conductors. Copper is the most common material used for conductors and is relatively inexpensive

                                                        Conductor

Materials that allow few free electrons are called insulators.Materials such as plastic, rubber, glass, mica, and ceramic are good insulators

                                                        Insulator

What is the role of free electrones in electricity?

Electrons in the outer band can become free of their orbit by  the application of some external force such as movement through a magnetic field, friction, or chemical action. These are referred to as free electrons. A free electron leaves a void which can be filled by an electron forced out of orbit from another atom. As free electrons move from one atom to the next an electron flow is produced. This is the basis of electricity.This movement of electrones is called electricity.

what is an atom?

All matter is composed of molecules which are made up of combination of atoms. Atoms have a nucleus with electrons orbiting around it. The nucleus is composed of protons and neutrons .Most atoms have an equal number of electrons and protons. Electrons have a negative charge (-). Protons have a positive charge (+). Neutrons are neutral. The negative charge of the electrons is balanced by the positive charge of the protons. Electrons are bound in their orbit by the attraction of the protons. These are referred to as bound electrons.

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Importance of learning electrical engineering basics

Haiii friends....Switchgear is basically an electro- mechanical device.Knowledge in both electrical and mechanical engineering is very important in switchgear industry.As i am an electrial engineer, i will first focus on basics of electrical engineering.So i will be posting some basics of electrical technology in this blog.After that i will focus more on switchgears.Hope this will help the readers of my blog to better understand switchgears.

what is a switch gear?

switchgear is the combination of electrical disconnect switches, fuses or circuit breakers used to control, protect and isolate electrical equipment.

In an electrical power system, fault may occour at any time.Switchgear is used to isolate the faulty part so that the rest of the system is protected.For maintanance work to be done at certain part of power system,it should be isolated from the rest of system.This is done by cutting off power supply to that part using switchgear.