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Lightning Arrester

Lightning Arrester – Location, Rating and Selection

A lightning arrester is connected to protect a piece of equipment from lightning and switching surges. Overvoltages may cause the … Continue Reading

Transformer Oil Filtration

Transformer Oil Filtration and Hot Oil Circulation Process

Transformer Oil Filtration Plant is a self-contained unit to upgrade the quantity of oil. The duty cycle begins from pumping … Continue Reading

transformer oil testing

Transformer Oil – Tests and Purification Methods

What is Transformer Oil? Transformer oil is mineral insulating oil derived from crude petroleum. It is a mixture of various … Continue Reading

condition-monitoring-transformer

Condition Monitoring for Transformers

Condition monitoring for transformers is the process of monitoring a parameter of conditions in transformer (moisture, temperature, etc.), in order … Continue Reading

electrical-Interview-Questions

Circuit Breakers – Objective Questions – Part 2

  Part 1Part 2Part 3Part 4Part 5 16. Out of the following circuit breakers, which one has the lowest voltage … Continue Reading

Construction of Air Blast Circuit Breaker Interrupter

Air Blast Circuit Breaker – Construction, Working and Types

Air blast circuit breaker employs a high-pressure air blast as an arc quenching medium. The construction and working of different … Continue Reading

Types of Circuit Breakers

Different Types of Circuit Breakers

A circuit breaker is a switching device which can be operated manually as well as automatically for controlling and protection … Continue Reading

SF6 Circuit Breaker

Methods of Arc Extinction in Circuit Breaker

The selection of an appropriate arc extinction method depends on several factors, including the voltage level of the circuit, the … Continue Reading

dc motor troubles

4 Major Troubles in a DC Motor with Reasons

DC motor fault zone analysis is a vital plan of any DC motor maintenance program. Several troubles may arise in a … Continue Reading

Objective Questions on Electric Traction – 1

1. Overall efficiency of steam locomotive system is close to (A) 5 to 10%(B) 25 to 30%(C) 55 to 60%(D) … Continue Reading

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  • Three-Phase Transformer Connections: Y–Y, Δ–Δ, Y–Δ, Δ–Y, V–V, T-T
  • Delta-Delta (Δ–Δ) Transformer Connection: Advantages, Working, and Application
  • Advantages and Disadvantages of Transformers
  • Junction Diodes: Construction, Working Principle, and I-V Characteristics
  • How to Accurately Read and Interpret Resistor Bands for Your Next Design Project

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  • Three-Phase Transformer Connections: Y–Y, Δ–Δ, Y–Δ, Δ–Y, V–V, T-T
  • Delta-Delta (Δ–Δ) Transformer Connection: Advantages, Working, and Application
  • Advantages and Disadvantages of Transformers
  • Junction Diodes: Construction, Working Principle, and I-V Characteristics
  • How to Accurately Read and Interpret Resistor Bands for Your Next Design Project
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