Electrical4U 
Magnesium is used as an anode material in primary battery due to its high standard potential. It is a light and low-cost metal. The magnesium/manganese dioxide (Mg/MnO2) battery has double the capacity of the zinc/manganese dioxide (Zn/MnO2) battery of the same size. It can retain its capacity even during storage at high temperatures. Magnesium batteries … Read more
Before diving into the details of charging and discharging of a battery, it’s important to understand oxidation and reduction. Battery charge and discharge through these chemical reactions.To understand oxidation and reduction, let’s look at a chemical reaction between zinc metal and chlorine.In the above reaction zinc (Zn) first gives up two electrons and becomes positive … Read more
Construction of Leclanche’ Battery In commonly available cylindrical Leclanche’ cell available in the market has following constructional features.
Zinc Carbon Battery The Zinc carbon battery has been widely used for over 100 years. There are two main types: Leclanché batteries and Zinc chloride batteries. Both are primary batteries. Georges Leclanché invented this battery in 1866, introducing a less corrosive electrolyte, ammonium chloride. Before this, only strong mineral acids were used in batteries.In the … Read more
What is an RTD (Resistance Temperature Detector)? A Resistance Temperature Detector (also known as a Resistance Thermometer or RTD) is an electronic device used to determine the temperature by measuring the resistance of an electrical wire. This wire is referred to as a temperature sensor. If we want to measure temperature with high accuracy, an … Read more
The working principle and construction of an Optical Pyrometer are quite simple. We have drawn an experimental model of this type of temperature sensors. It is a measuring instrument that measures temperature of a hot glowing object. The instrument uses an illuminated reference. The brightness of the hot object is matched by adjusting the electric … Read more
Principle of Tan Delta Test When a pure insulator is connected between the line and earth, it acts like a capacitor. Ideally, if the insulating material, also serving as a dielectric, is 100% pure, the electric current passing through would only have a capacitive component, with no resistive component, due to zero impurities. In a … Read more
We generate electrical power using nuclear reactions. In a nuclear power station, heavy radioactive elements like Uranium (U235) or Thorium (Th232) undergo nuclear fission. This process occurs in a special device called a reactor. What is nuclear fission? In the fission process, the nuclei of heavy radioactive atoms are broken into two nearly equal parts. … Read more
What is a Control System? A control system is defined as a system of devices that manages, commands, directs, or regulates the behavior of other devices or systems to achieve a desired result. A control system achieves this through control loops, which are a process designed to maintain a process variable at a desired set … Read more
An electric lamp is defined as a component used in circuits for lighting and indicating purposes. Its simple construction includes a tungsten filament inside a transparent glass cover. The tungsten filament glows without melting when current flows through it because of its high melting point. Uses of Electric Lamps These lamps are mainly get used … Read more