Md Nazmul Islam

The use of air conditioners is very extensive in our daily lives. It serves us on a daily basis. Air conditioner usage is mostly in the office, industry, bank, shopping mall, households, and hotels. Today we will learn about the top air conditioning problems and solutions. During summer and...

Have you ever wondered what causes power to go out for a few seconds? There is a saying that, good with good and bad with bad. Electricity maintains this law. This electricity for the welfare of the people but if you can't control this electricity tragedy can be...

More or less every electrical engineer bears a question in mind that, why is the AC signal frequency always 50/60 Hz? Why not use other values? Europe, Africa, Asia all produce this same amount of AC signal frequency. So, let us discuss this topic today. But, before that get...

Once, I was walking down the road. There I saw some people establishing a new transformer. I became curious and went towards it to see how it is done. Then, I took a look at the plate. I saw something written like Dny11 on its body. Then, I wondered,...

Today we are going to discuss about shocking probability in power line for various positions. The human body is a conductor of electricity. The relationship between electricity and man is no less than that of Romeo and Juliet. One question that comes to mind is that if you touch...

Grid substation: For Distinguishing between grid and distribution substation we have to know the definition of these two terms. Grid substation is a substation that receives power from a power generating station and lowers the voltage with a step-down transformer and transmits it to the distribution substation or to the...

The Economic Choice of Transmission Voltage - One day, I was teaching about transmission lines in a class. Then a student asked me a question, "Sir, how does the PGCB (Power Grid Company of Bangladesh) fix the transmission voltage as 132, 230, or 400 KiloVolt?" The question was logical....

AC-DC and Filament of an electric bulb | A love Story - Ever thought about, AC-DC and Filament of an electric bulb. Why can't DC be used instead of AC? Let's learn from a love story, shall we? It’s raining outside. The atmosphere is gloomy. Holding a cup of hot...

Why stones are used in Substation instead of Sand or Grass? Ever thought, why stones are used in substation instead of sand or grass? The reason is simple. But, can't be explained easily. What comes to mind when we hear about substations? Transformer, circuit breaker, lightning arrester, etc devices come...

Difference between black out brown out and spooky phenomenon - Black out and brown out are two different things. It may seem like a spooky phenomenon, but in reality it is not. The difference between black out, brown out and spooky phenomenon will now be explained. Difference between black out...

What does mAh mean in a battery - What do we mean by the mAh rating? Especially, in the case of mobile batteries, what does it stand for? Today, I will discuss a very exciting topic with you all. At the age of 4G, there is hardly any person without...

Direction of current flow and electron flow- why are they opposite to each other? No matter how much research we do about voltage and current, people just can't get enough of it. The people are always curious regarding it. Moreover, most curiosity arises about why electron and current flow opposite...