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Showing posts with the label Science

How an electric motor works?

An electric motor is a device that converts electrical energy into mechanical energy. It works by using the principle of electromagnetism, which is the interaction between electric currents and magnetic fields. There are different types of electric motors, but the basic idea is the same: a coil of wire carrying an electric current rotates inside a magnetic field, creating a force that makes the coil spin. One of the simplest electric motors is a DC motor , which runs on direct current (DC) from a battery or a power supply. A DC motor has two main parts: a rotor and a stator. The rotor is the part that spins and has a coil of wire wrapped around an iron core. The stator is the part that stays still and has a permanent magnet or an electromagnet. The coil of wire on the rotor is connected to a split ring called a commutator, which rotates with the coil and switches the direction of the current every half turn. This ensures that the coil always experiences a force in the same direc...

A Transformer and its components

An electrical transformer is a device that transfers electrical energy from one circuit to another by electromagnetic induction. It is used to change the voltage level of alternating current (AC) power. A transformer consists of several parts, each with a specific function and purpose. Here are some of the main parts of an electrical transformer and their functions: - Core: The core is the central part of the transformer that supports the windings and provides a low reluctance path for the magnetic flux. The core is made of thin sheets of high-grade steel, separated by thin insulating materials, to reduce the losses due to hysteresis and eddy currents. -Windings: The windings are coils of copper or aluminum conductors that carry the electric current and produce the magnetic flux in the core. The windings are insulated from each other and from the core. There are two sets of windings per phase: the primary winding and the secondary winding. The primary winding is connected to the i...

How does a solar work?

How Solar Panels Work: A Simple Guide Solar panels are devices that convert sunlight into electricity. They are widely used as a clean and renewable source of energy for homes, businesses, and power plants. But how do they work? What are the main components and principles behind them? In this article, we will explain the basics of solar panels and how they produce electricity from sunlight. THE PHOTOVOLTAIC CELL The key to understanding how solar panels work is the "photovoltaic effect". This is a phenomenon that occurs when certain materials, such as silicon, absorb photons (light particles) and release electrons. These electrons can then be captured and used to create an electric current. The photovoltaic effect was discovered in 1839 by French physicist Edmond Becquerel, who observed that a metal electrode immersed in a solution produced an electric current when exposed to light. Later, in 1905, Albert Ei...

7 Sparking Marvels of Electrical Engineering That Made Our Current Life Possible

the seven sparking marvels of electrical engineering that made our current life possible: # 7 Sparking Marvels of Electrical Engineering That Made Our Current Life Possible Electrical engineering is the branch of engineering that deals with the study and application of electricity, electronics, and electromagnetism. Electrical engineers design, develop, test, and supervise the manufacture of electrical equipment, such as electric motors, radar and navigation systems, communication systems, and power generation equipment. Electrical engineering has also contributed to many innovations and inventions that have shaped our modern world. Here are seven examples of such sparking marvels of electrical engineering: ## 1. AC - Alternating Current Alternating current (AC) is a type of electric current that reverses its direction periodically. The advantage of AC over direct current (DC) is that it can be easily transformed to different voltages using transformers, which makes it more suitab...

Elon musk offers free charging for Tesla owners in Israel amid conflicts

Elon Musk's decision to make all Tesla Superchargers in Israel free: Elon Musk offers free charging for Tesla owners in Israel amid conflict Tesla CEO Elon Musk has announced that all Tesla Superchargers in Israel will be free of charge for the foreseeable future, as a show of solidarity with the Israeli people who are facing rocket attacks from the Hamas militant group. Musk made the announcement on X, a social media platform formerly known as Twitter, on October 11, 2023 . "Free Supercharging for all Tesla owners in Israel. Stay safe and God bless," Musk wrote in his post, which received over 2 million likes and 500,000 retweets. Many users thanked Musk for his gesture and praised him for his support for Israel. Some also urged him to donate to humanitarian causes or help broker a peace deal between Israel and Hamas. Tesla has 22 Supercharger stations spread across Israel , which allow Tesla owners to charge their electric vehicles quickly and conveniently. By making t...

How to differentiate star from delta connection in electric motors?

One way to differentiate star from delta connection in electric motors is to look at the terminal box of the motor, where the wires are connected. In a star connection, the terminals W2, U2 and V2 are joined together by metal plates, and the terminals W1, U1 and V1 are connected to the external power supply or load. STAR CONNECTION In a delta connection, the terminals U1, V1 and W1 are joined to W2, U2 and V2 respectively by metal plates, forming a triangular shape. The terminals A, B and C are connected to the external power supply or load. You can see some examples of star and delta connections in the terminal boxes of motors : DELTA CONNECTION THIS VIDEO SHOWS THE DIFFERENCE BETWEEN STAR AND DELTA CONNECTION IN ELECTRIC MOTORS Another way to differentiate star from delta connection in electric motors is to measure the resistance or voltage across the terminals of the motor. In a star connection, the resistance or voltage between any two terminals i...

How does a transformer? || Transformer, how it works

How it works? In the wake of associating the transformer to an exchanging current source, a rotating attractive motion is framed in it's essential winding. It is sent through the attractive circuit to the optional winding, including a variable EMF (electromotive power) in them. On the off chance that there is a utilization gadget in the optional winding circuit, an electric flow happens. Choosing the necessary proportion between the quantity of turns of the essential and auxiliary windings, you can increment or decline the voltage on the optional winding. On the off chance that it is important to get a voltage on the optional twisting more noteworthy than that provided to the essential, then the quantity of turns of in the optional winding, should be more prominent than in the essential. In summary Choosing the necessary proportion between the quantity of turns of the essential and auxiliary windings, you can increment or decline the voltag...

A.B.U Graduate, Engineer Enwongulu Who Built Motorcycle In Akwanga Says It Cost Him Over #200k

A.B.U Graduate, Engineer Enwongulu Who Built Motorcycle In Akwanga Says It Cost Him Over ₦200k *** Engineer James Enwongulu, has hinged his decision to build a motorcycle on current prices of automobiles in the country. According to him, it cost him over ₦200,000 to built the bike nicknamed “Spiritual” by his Nephew. Speaking recently on Matters Arising, a current affairs programme of Akwanga-based Option FM, Enwongulu said most of the materials used in building the Motorcycle were sourced locally and took him two (2) months to finish. Sourcing for materials and funding, he revealed were the major challenges faced while building the Motorcycle which runs on Premium Motor Spirit (PMS) commonly known as fuel. He further said the motorcycle was his first product, adding that he's making efforts to make it more economical and energy-friendly. Mr Enwongulu is a graduate of Mechanical Engineering from Ahmadu Bello University, Zaria, Kaduna State. He w...

Tesla Cybertruck Tri motor (Electric Motor) Technical Specifications

Drivetrain and Performance The Tesla Cybertruck Tri Motor is a full electric vehicle (BEV). The estimated maximum power of the Tesla Cybertruck Tri Motor is 600 kW (805 hp). The estimated maximum torque is 1033 lb-ft. The Tesla Cybertruck Tri Motor is all wheel drive and can accelerate from 0 to 62 miles per hour in an estimated 3.0 seconds. The estimated top speed is 130 mph. #elonmusk #cybertruck #technical #spec #specifications #electric #motor

FOUR HIDDEN ROMAN SWORDS FOUND IN AN ISRAELI CAVE. THE SWORDS WERE PRESERVED IN AN EXCELLENT STATE. September 6, 2023/JNS

Four hidden Roman swords found in an Israeli cave The swords were preserved in an excellent state. Sejal Sharma Sejal Sharma | Sep 06, 2023 03:30 PM Four Roman swords dating back 1,900 years have been discovered in a near impregnable crevice inside a small hidden cave in Israel’s En Gedi Nature Reserve in the Judean Desert. As per the initial findings, the researchers believe that the swords were hidden by the Judean rebels after they were seized from the Roman army as booty. It was revealed from the way the swords were assembled that these kinds of swords were used regularly by the Roman soldiers stationed in Judea in the Roman period EST Sensation in the Judean Desert: a cache of four 1,900-year-old, excellently preserved Roman swords and a shafted weapon were discovered in a crevice in a cave in the ‘En Gedi Nature Reserve. It appears that the weapons were hidden by the Judean rebels, after they were seized from the Roman army as booty. “Finding a single sword is rare—so ...