Md Nazmul Islam

You are walking through a cool and calm street. Suddenly, you discovered a power substation laying beside the street. There are many kinds of equipment with a view to setting up a substation. Suddenly, you notice a bunch of CT (current transformer) in the substation. All of a sudden,...

What is Switch? A switch is the boss of all electrical devices. Devices work according to the direction of the switch. The electrical switch is a type of controlling device, which is used for controlling current or electron flow in an electrical circuit. It is also called the controlling device...

Suppose, you are watching a cricket match. You have a packet of chips. And we know, the packet is not full of chips. there is some air. If the whole packet is apparent power, the part filled with chips is real power, and the part with air is reactive...

An oil circuit breaker is a kind of circuit breaker which uses oil as a dielectric or insulating medium for repressing an arch. Contacts of the oil circuit breaker are separated in insulator oil. Oil Circuit Breaker  If any fault occurs in the system, the contacts of the circuit breaker stay...

Have you heard about the shunt trip circuit breaker? How will we draw the shunt trip breaker wiring diagram? We are acquainted with a circuit breaker that protects our power system from unwanted faults such as a short circuit. Electricity is more ferocious than the leopard. A few days back,...

Combined cycle power plant - we can guess its structure from the name. It has two cycles. It produces current by generating coupling of turbine and burning fuel. Also, the heat of the turbine is used for making steam by heating boiler water and the steam is used for the...

We have studied a lot about the motor/generator excitation systems. But have we understood it deeply? Let's discuss the motor and generator excitation system in an interesting way. What is Excitation?  From the word excitation, we can guess that it must be a process for exciting something. Suppose, you have a...

We all are familiar with ammeter and voltmeter. We measure current by ammeter and voltage by a voltmeter. At the time of measurement, the ammeter is connected on series and the voltmeter on parallel. Today we will discuss the conversion of ammeter to voltmeter. Ammeter The internal resistance of the ammeter is...

Do you know What is the function of AVR? Can't concentrate on studying? Sometimes you feel active and sometimes the energy is gone. The cause is a lack of concentration. If a motivator motivates you in this condition and boosts you up it would be great. And when alternator voltage...

Based on tripping quality/breaking capacity, MCB( Miniature Circuit Breaker) can be of different types. Today we will discuss types of MCB circuit breaker. What is tripping quality/breaking capacity?  We can compare this topic with the human body. We know, human blood is a buffer solution. It means, if you eat...

Some of us have a question, Why Capacitor is Used in Ceiling Fan or Single Phase Motor? Maybe for saving charge? Is this a real fact? Let us know about the real facts behind it. Today we will discuss why capacitor is used in ceiling fan? If we say in...

We all heard about relay but we are seeking out a simple relay wiring diagram. It's a very popular topic for all electrical engineering students. Today I will discuss it in an easy manner. Let's start. Before going into details, I want to introduce the relay first. What is relay? Imagine,...