Insulation Resistance Test (IR Test) or Megger Test
Insulation Resistance or IR Test is carried out by maintenance engineers to ensure the healthiness of the overall insulation system … Continue Reading
Electrical Machines
Three Phase Transformer Interconnections
The phase windings of three-phase transformers are interconnected to give a three-phase, three-or four-wire supply through three different modes of … Continue Reading
Effects of Voltage and Frequency Variation on Transformers
The effects of voltage and frequency variation on the transformer is discussed in this article. Usually, power transformers are not … Continue Reading
Characteristics of DC Shunt Generator
In this article, you will learn the characteristics of a dc shunt generator. A shunt generator is a type of … Continue Reading
Characteristics of Series Wound DC Generators
In this post, you will learn the characteristics of a series wound dc generator. This article is the continuation of … Continue Reading
Characteristics of Separately Excited DC Generators
In a separately excited dc generator, the field coils are energized from an independent source. The disadvantage of a separately … Continue Reading
DC Generator Characteristics
DC generator characteristics are the relations between excitation, terminal voltage and load exhibited graphically by means of curves. These characteristics of dc generators are very important in the … Continue Reading
Types of DC Generator – Series, Shunt and Compound
A DC generator requires MMF to establish flux in its magnetic circuit. The MMF necessary to establish flux in the … Continue Reading
Split Phase Induction Motor – Operation and Characteristics
Before going to the operation and characteristics of split-phase induction motor we should first understand why single phase induction motor … Continue Reading
Current Transformers – Windings and Rated Insulation Levels
A current transformer is an instrument transformer in which the current ratio is within the specified limit. The primary winding … Continue Reading