Each time a current of electricity flows through a conductor, it creates a magnetic field that creates a deflection if put next to an electrical wire. A compass that is placed next to such wire can deflect due to the magnetic field. Magnetic fields are visualized by a series of lines that extend from every point across space, with intensity proportional to the direction they are in at every point.
Parts of an Electric Motor A motor that is electric converts electric energy into mechanical energy by producing an electric force that rotates, utilizing electromagnetism (the magnetic force generated by conducting electricity via wires). Similar poles attract, while opposite poles disengage. Every electric current loop is subject to an electric B-field which exerts force in proportion to the cross product of the two variables m and H. This force is expressed in terms of "mB cos th". Solenoids that have current flowing through it functions as an magnet and its B-field is measured with the magnetic field meter. This tool can be used to create magnetic fields through different combinations of solenoids by altering the number of loops inside them, and then observing the strength of their B-field change in line with the changes. What is a Magnetic Field? The electric current that flows through wires generates magnetic fields. The strength of these fields and their direction can be measured through Maxwell's Equations (see the next section). The intensity of magnetic field, also known as B, is measured in units referred to as Webers. One Weber is equal to one square meter's worth of the magnetic field created by a magnet. Refrigerator magnets are extremely small magnets that have magnetic fields that can be explained using a basic memory mnemonic referred to as the right-hand grip rule. Based on this mnemonic, magnetic fields are able to be identified through the grip of your thumb on the wire, with your fingers pointing in the direction of current flows; magnetic field lines emanate from the north pole, and then spread out and then return to its south pole. How to Buy an Electrical Motor Electric motors convert electric current into mechanical energy using electromagnetism theories. The magnetic field acts as a the force of deflecting against a circuit of wire carrying current that keeps the electric motor running constantly. To understand this concept better create a basic electromagnet. The first step is to remove the insulation the one side of the copper coil wire that is attached to a clip such the bare end is clearly visible. Then, place this paperclip against a disk magnet. When electricity starts moving through a paperclip it's magnetic field collides with the one produced by the copper coil that surrounds it, causing it to be attracted by and repelling the magnetic fields. When this happens you'll notice that the wire loop oscillates between being drawn by one magnetic field, and the other until it finally gives way. Electric Motors for Sale Electric motors make use of electromagnetic forces to transform electrical energy into mechanical energy by combining the magnetic field with the current inside coils, generating the torque that causes its shaft to turn. They can be powered by the direct current of batteries or AC current generated by electric generators or power grids. AC motors have become a sought-after option in office equipment as well as heater blowers, fans as well as refrigeration equipment. Similar to the DC equivalents AC motors use coils that are energized by alternating current to create an outer stator that is equipped with magnets that create an alternating magnetic field as well as an inner rotor that is equipped with conductors that carry the current directly to its internal rotating shaft to turn it and create torque. In order to turn the rotor each electromagnet is required to be turned on as brushes and commutators slow flow of current each time the shaft turns half-turns. Used Electric Motors The majority of electric motors utilize magnets and electric currents to communicate with each other and create force which causes the rotor to rotate, generating mechanical energy that can transform into work like spinning fans, or motors that power tools. A great way to show the way an electric motor works is to put two magnets in close proximity using a small length of conducting loop. When the electricity is flowing through them, one magnet is attracted towards the north pole, and another toward its south. Induction motors are the most popular electric motor in the industrial sector. It is comprised of two main components namely a stator as well as the rotating. It is driven through the AC magnetic field that is generated by the stator through coils that produce spin.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |