open-circuit and short-circuit test

Torque-Slip and Torque-Speed Characteristics The Torque-slip curve of an induction motor shows the variation of torque with the slip. We have If…

Types of D.C Machine The magnetic flux in a d.c machine is produced by field coils carrying current. The production of magnetic…

Working Principle of a Single Phase Induction Motor Production of Rotating Field Consider two winding ‘A’ and ‘B’ so displaced that they…

Equivalent circuit of an Induction Motor Stator’s Equivalent Circuit: The stator model of an induction motor consists of a stator phase winding…

Parallel operations of transformers When we connect the primary windings of two transformers to a common supply voltage and the secondary windings…

Types of single phase induction motors The single-phase induction motor is started by using some methods. Mechanical methods are not very practical…

Types of three phase induction motor rotor There are two types of induction motor rotors: Squirrel-cage rotor or simply cage rotor. Phase…

Auto Transformer What is single-phase autotransformer? It is a single winding transformer in which a part of the winding is common to…

Construction of Single – Phase Transformers A single-Phase transformer consists of primary and secondary winding. The core of the transformer is made…

Direct-Current Generators Basic Structure of Electrical machines: A rotating machine has two parts stator and rotor. Stator does not move, and it…