Electronics

A lightning conductor, also known as a lightning rod or air terminal, is a metal rod or conductor installed on the top of a building or structure. Its primary function is to protect the building from lightning strikes by providing a preferred path for the electrical discharge to reach the ground safely. When a thundercloud … Read more

A shunt trip breaker works by incorporating a built-in shunt trip device that allows the breaker to be tripped remotely. The shunt trip device consists of a solenoid or coil that, when energized by an external control signal, mechanically triggers the breaker to open. This design ensures that the breaker can be tripped not only … Read more

Circuit breakers can deteriorate or go bad over time due to various factors such as age, wear and tear, environmental conditions, and electrical faults. One common issue is that the internal components of a circuit breaker can become worn or damaged, affecting its ability to properly trip and reset when necessary. Additionally, exposure to moisture, … Read more

Batteries store and supply direct current (DC). This means the current flows consistently in one direction from the positive to the negative terminal. Whether it’s a small 1.5V battery or a larger 9V battery, the output remains DC. DC is ideal for powering electronic devices and systems that require a steady and predictable flow of … Read more

Deciding whether to use an AC motor or a DC motor depends on the specific application and requirements. AC motors are generally preferred for applications requiring high power, efficiency, and durability, such as in industrial machinery, household appliances, and HVAC systems. They are also easier to maintain and can run on the alternating current supplied … Read more

When a DC current is passed through an inductor, initially, the inductor opposes the change in current flow. According to Faraday’s law of electromagnetic induction, an induced electromotive force (emf) is generated in the inductor that opposes the change in current. This property causes the inductor to resist sudden changes in current, behaving momentarily as … Read more

A transformer is typically classified as a passive device. This classification stems from its primary function of transferring electrical energy from one circuit to another through magnetic coupling, without altering the frequency of the alternating current (AC) or adding energy to the system. In essence, a transformer operates on the principle of electromagnetic induction, where … Read more

When an inductor is connected to AC mains, it responds to the alternating current by generating a magnetic field that opposes changes in the current flow. Due to the inductor’s property of inductance, it resists sudden changes in current by inducing a voltage (back EMF) opposite to the direction of the current. This results in … Read more

Electric switches are often made of plastic due to several advantageous properties that make it suitable for electrical applications. One primary reason is that plastic is an excellent electrical insulator. It effectively prevents the conduction of electricity, reducing the risk of electrical shock when handling switches or plugs. Unlike materials such as metal, which can … Read more

The material chosen for a transformer core is typically based on its magnetic properties, cost-effectiveness, and suitability for the specific application. One of the most common materials used for transformer cores is silicon steel (also known as electrical steel). Silicon steel alloys are preferred due to their high magnetic permeability, which allows for efficient magnetic … Read more