All Day Efficiency of Transformer
Definition The ratio of output in kWh to the input in kWh of a transformer over a 24-hour period is … Continue Reading
How to Make a DC Motor at Home?
DC Motors works on the principle that they convert electrical energy (from a battery or voltage source) into mechanical energy … Continue Reading
What is Power Factor, Its Causes and How to Improve it?
To understand power factor in an electrical system, first of all, we should have the knowledge of some basic terms … Continue Reading
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
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
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
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
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 Fluorescent Lamps
The Stroboscopic Effect in Fluorescent lamp is a phenomenon which causes running or moving equipment to appear stationary or appear … Continue Reading
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