Electrical Machines Tutorial

Open Circuit Test and Short Circuit Tests To determine the circuit constant, efficiency and regulation of a transformer, without actually loading the…

Regulation and efficiency What is voltage Regulation? The term voltage regulation identifies the characteristic of the voltage change in the transformer with…

Three phase induction motors Three – Phase induction motor is the most common and popular type of a.c motor used for industrial…

Three Phase Transformers The three-phase transformers are mainly of two types: Single unit three-phase transformer. Three unit three-phase transformer. Figure: Three phase…

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…

Construction of three phase synchronous machines An alternator consists of two parts, the stator, and the rotor. The stator is the stationary…