Electrical Diary

What is the Emf equation of DC Generator? The voltage generated in the armature of any DC generator or motor is determined by an equation. This equation is called the Emf Equation of DC Generat…

What is a Transformer? A transformer is a static electrical device which consists of two or more electric circuit which is linked by a common magnetic circuit. This magnetic circuit transformer e…

Definition of Electric Braking A smooth and safe reduction in the speed of the electric motor is called electric braking. The application of motors, it requires a quick, accurate, or rapid stop of …

What is the Armature Control Method of DC Motor? Armature resistance Control Of DC Motor- In this method of speed control of DC motor, an external variable resistor is connected in series with t…

What is a Starter? The starter is an electrical device that is used to start a dc motor. the purpose of using a starter to start a dc motor is that the starter gives smooth and control the start of …

Definition of Armature reaction- Interaction between main field flux (which is generated by the stator on supplying the external current) and the induced field flux ( which is generated in the arma…

Primary or absolute instrument -  Primary or absolute instrument are those instrument which indicates the quantity to be measured in term of constants of instruments and in order to find out consta…

Ac motor are classified into two main type.(a) Synchronous Motor and (b) Asynchronous motor. Generally asynchronous motors are called induction motor.Synchronous and asynchronous  both motor  are …