Air Circuit Breaker

This type of circuit breaker is kind of circuit breaker which operates in air at atmospheric pressure. After development of oil circuit breaker,...

Residual Magnetism

What is called Residual Magnetism ? Residual magnetism is defined as the amount of magnetization left behind after the outside magnetic field has been removed...

Parallel operation of generators

Parallel operation of generators means two or more generator of same or different size are running with their output cable connected onto...

What is single phasing ?

What is single phasing? Single phasing is the term used to denote the condition arising in a three-phase circuit when one phase becomes open circuited.Or,...

Safety Precautions Working on Electrical Equipment

What are the safety precautions when working on electrical equipments? 1. Switch off power 2.wear proper protective clothing 3. safety shoes 4. Notice board : Do not switch...

What is a DC motor – Construction, Type, Working Principle, Speed Control

What is a DC motor ? It is a device which converts electrical energy into mechanical energy. In today's world...

DIFFERENCE BETWEEN BATTERY AND CELL

DIFFERENCE BETWEEN BATTERY AND CELL. The difference between cells and batteries is that a cell is a single unit which converts chemical energy to electrical...

Difference between lead acid and nickel-cadmium batteries

difference between lead acid and nickel cadmium batteries Difference Between difference between lead acid and nickel cadmium batteries are Following :- If you have any Query...

What is Muff Coupling (Sleeve) – Design , Diagram & Working

What is Muff Coupling or Sleeve Coupling ? A muff coupling / Sleeve Coupling is the simplest type of...

INSULATION OF MOTOR AND MEGGER TESTING?

INSULATION OF MOTOR AND MEGGER TESTING? In this Article I am going to discuss about Motor Insulation and Megger Testing ? Motors insulation is tested using...