Tag Archives: Electromagnetism

Open Circuit & Short Circuit Tests of Electrical Transformers

There are many different tests for the transformers depending upon the usage, type and size but most common tests are: Short Circuit Test Open Circuit Test Let us first understand that what does short circuit and open circuit means in electrical transformers: What is a Short Circuit? A short circuit is an electrical circuit that… Read More »

Electric Current Electric Charge & Electromagnetism

Very basic question which an electrical student or professional may be asked is what is electric current and electric charge. The electric current is actually the flow of electric charge from one point to other point of the conductor or wire or cable. In electric circuits this charge is often carried by moving electrons in a… Read More »

Curie Weiss Law & Curie Constant

In a paramagnetic material the magnetization of the material is (approximately) directly proportional to an applied magnetic field. However, if the material is heated, this proportionality is reduced; for a fixed value of the field, the magnetization is (approximately) inversely proportional to temperature. This fact is encapsulated by Curie’s law: where is the resulting magnetisation… Read More »

Faraday’s Law of Electromagnetic Induction

FARADAY’S LAW OF ELECTROMAGNETIC INDUCTION According to the Faraday’s law of electromagnetic induction, emf gets induced in the rotor. As the rotor circuit is closed one so, the current starts flowing in the rotor. This currents called the rotor current. This rotor current produces its own flux called rotor flux. Since this flux is produced… Read More »