Equivalent circuit and Phasor diagram of a transformer

In order to understand the equivalent circuit of a transformer, we suggest you read Ideal transformer first and then come back and continue from this point. What is an equivalent…

Ideal Transformer

A transformer is an AC device used to step down or step up voltages. To visualize the current flow and other circuit properties of a transformer, certain assumptions are made,…

An overview of Electric Machines

Electricity does not exist naturally in any useful form. It has to be generated from any other sources of energy such as solar, wind, hydro, thermal, atom, etc. Photovoltaic cells…

Power consumption & energy usage of ceiling fans

Ceiling fans are used to circulate air inside a closed space. Even though they do not cool down the air, the continuous circulation of air helps us feel better. The…

What is meant by plugging a motor?

Induction motors are one of the major power-consuming loads on the planet today and are widely used for all industrial and domestic applications. Plugging is one of the braking techniques…

Generate electricity from electricity – Is that possible?

“Can we generate electricity from electricity?” This is a quite common question that many people ask. The answer for this question is amazingly simple but tricky. We need to understand…

Types of electric transformers

You might have come across various types of transformers in your daily life either knowingly or unknowingly. This article illustrates various transformer types. Before getting into classification, here is a…

Top 5 differences between fuses and circuit breakers

Short circuits and overloads are abnormal conditions that cause heavy current flow in a circuit. Heavy currents are capable of damaging a device or a circuit and may end up…

Why are overhead transmission lines not insulated?

Overhead transmission lines are not insulated primarily due to three reasons: first and foremost is to reduce the weight of the lines, secondly to save cost and the last is…

Difference between fuse and MCB

Circuit protection devices such as fuses and MCBs are used to safeguard any equipment from damages caused due to short circuits. The usage of these devices does not mitigate the…