# Category: Electrical

## Godown wiring circuit diagram and working

Godown wiring uses to operate lamps/loads in a sequential manner, where only one load operates at a time. As its name implies ” Godown wiring “, it is commonly used for light switching in...

## Staircase wiring circuit diagram & working

Staircase wiring is a common multi-way switching or two-way light switching connection. Here one lamp is controlled by two switches from two different positions. That is to operate the load from separate positions such as...

## Electrical & Electronics Abbreviations & Full forms : A-Z quick notes

Electrical Abbreviations and Acronyms are used very often in the field of electrical industrial. The page contains a list of abbreviations and its full forms, which are commonly used in electrical and electronics engineering....

## Transformer Polarity test addictive, subtractive and transformation ratio test

Transformer Polarity Test Transformer Polarity is the relative direction of the induced voltages between the high voltage terminals and the low voltage terminals. The winding terminals of a transformer possess polarities. The polarity test...

## why fuse is not connected in neutral ?

In electrical circuits, fuses are used as a protective device to prevent the circuit from an excess current flow. An excess current flow can cause due to many reasons such as short circuit, overload, etc....

## Fuse and Miniature Circuit Breaker (MCB) Difference Comparison

The MCB and a normal fuse have the same function. Both, are used to prevent the circuit from an excess flow of current resulted due to short circuit or overload. When the current flow...

## Need of starter in dc motor

While starting a DC motor huge amount of current can be driven to the windings due to the absence of the back emf. The current may rise about 4-6 times higher than the rated load current...

## Inductive reactance formula derivation and calculation

Inductive reactance equation derivation Inductive reactance is the opposition offered by the inductance to the current flow. The Inductive reactance is directly proportional to the frequency ‘ f ‘ and the inductance ‘ L’....

## Capacitive reactance formula derivation and calculation

Capacitive reactance equation derivation The capacitive reactance is inversely proportional to the frequency ‘ f ‘ and the Capacitance ‘ C’. The value of capacitive reactance is measured in ohms. Capacitive reactance calculation Capacitive...

## Why earth pin is thicker and longer?

Most of the plug and sockets are 3 pin type which consists of a phase, neutral and earth. In a 3 pin plug, the earth pin is thicker and longer in size compared to...