Insulators, Conductors and Semiconductors (with Band Diagram)
Solid state materials can be classified into three groups: Insulators have no free charge carriers available with them under normal … Continue Reading
Basic Electrical
Working of Air Circuit Breakers
What is an ACB? A circuit breaker in which the contacts open and close in the air at atmospheric pressure … Continue Reading
Working Principle of DC Motor
A DC motor is an electrical machine that converts electrical energy into mechanical energy. DC motor working is based on the principle … Continue Reading
Parallel Operation of Single Phase Transformers
By parallel operation of single-phase transformers, we mean two or more transformers are connected to the same supply bus bars on … Continue Reading
Effect of Electric Current on Human Body at 50 Hz
Each year in France, for example, 200 people die of electrocution and 500 suffer serious injuries, often permanent burns, respiratory … Continue Reading
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
How Fluorescent Lamp Lights Work
A fluorescent lamp or a fluorescent tube is a low-pressure mercury-vapor gas-discharge lamp that uses fluorescence to produce visible light. … Continue Reading
Why Three Phase System Preferred Over Higher Phases?
A three-phase system is universally employed for a generation, transmission, and distribution of electric power. There are several reasons for … Continue Reading
29 Important Electrical Interview Questions you must Go through
Nervous about an upcoming Electrical Engineer interview? Check out this well-curated list of frequently asked Electrical interview questions and answers. … Continue Reading