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Substation Relay

Basics of Protective Relaying in Power System

Protective relaying is necessary with almost every electrical plant, and no part of the power system is left unprotected. The … Continue Reading

how to build a power supply unit

Design a Power Supply Circuit – Simple to Complex

No electronics can run without power, to be precise a low voltage DC power, and a power supply unit is … Continue Reading

minimum oil circuit breaker

Oil Circuit Breakers – Types, Working and Construction

In oil circuit breakers, some insulating oil (e.g., transformer oil) is used as an arc quenching medium.  Working Principle of … Continue Reading

Understand power factor using horse cart

Understanding Power Factor Using a Horse and a Railcar

A simple analogy is the best way to understand power factor. Please read what is power factor before reading this … Continue Reading

back up protection

Primary and Back-up Protection in Power System

Primary and Back-up Protection Primary protection (Main protection) is the essential protection provided for protecting an equivalent/machine or a part … Continue Reading

Stroboscopic effect in flourescent lamp

Stroboscopic Effect in Fluorescent Lamps

The Stroboscopic Effect in Fluorescent lamp is a phenomenon which causes running or moving equipment to appear stationary or appear … Continue Reading

interview question circuit breaker

Circuit Breakers – Interview Questions with Answers

1. What is a Circuit Breaker? Circuit Breaker is a mechanical device designed to close or open contact members, thus … Continue Reading

load forecasting in power system

Load Forecasting – Purpose, Classification and Procedure

What is Load Forecasting? Electrical energy cannot currently be stored in large amounts. It has to be generated whenever there … Continue Reading

Why Electric Motors Rated in KW

Why Electric Motors are Rated in kW and not in kVA?

Unlike Generators and Transformers, Electric Motors are rated in kW instead of kVA. We have already discussed why electric transformers … Continue Reading

Stepper motor types

Types of Stepper Motor

A stepper motor is an electromechanical device which converts electrical pulses into discrete mechanical movements.    The shaft or spindle … 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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