Parallel Operation of DC Series Generator
The interesting thing about the parallel operation of the DC series generator is that DC series generators are not usually … Read moreParallel Operation of DC Series Generator
Armature Reaction in DC Generator
To understand the concept of armature reaction in DC generator, please go through the previous articles describing the construction of … Read moreArmature Reaction in DC Generator
Power Transformer Testing Methods – Type, Routine & Special Tests
An electrical power transformer has to go through a number of transformer testing procedures for confirming its specifications and performances. … Read morePower Transformer Testing Methods – Type, Routine & Special Tests
Why Transformers are Rated in kVA, Not in kW? (With Proof)
Discover exactly why transformers are rated in kVA rather than kW. Learn how core and copper losses dictate a transformer’s thermal limit, explore the mathematical proof behind changing load power factors, and master this classic electrical engineering interview question.
Characteristics of DC Compound Generator
In a compound generator, both series and shunt excitation are combined as shown in the figure. The characteristics of DC … Read moreCharacteristics of DC Compound Generator
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 … Read moreInsulation Resistance Test (IR Test) or Megger Test
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 … Read moreThree Phase Transformer Interconnections
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 … Read moreEffects of Voltage and Frequency Variation on Transformers
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 … Read moreObjective Questions on Alternator | Part 1