Why Transformers are Rated in kVA, Not in kW?
Transformer rating is expressed in kVA, not in kW. Rating of a transformer or any other electrical machine reflects its load carrying … Continue Reading
Characteristics of DC Compound Generator
The characteristics of DC compound generator refer to the relationship between various parameters that define the operational behavior of the … Continue Reading
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
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
Objective Questions on Alternator | Part 1
1. In an alternator, voltage drops occurs in (A) armature resistance only (B) armature resistance and leakage reactance (C) armature … 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