Electric generators and motors convert mechanical energy into electrical energy and vice versa. All energy requires a resource and a device to convert it. Generators use electromagnetic induction to convert mechanical energy into electrical energy, while motors convert electrical energy into mechanical energy. Both have a rotor and stator, and are used in power plants and other mechanical equipment. Electrical and mechanical engineering careers focus on using this energy in various devices.
Mechanical electrical energy can be created in two ways: with an electric generator or a motor. The term electric generator is used to describe a range of devices that convert mechanical energy into electricity. An engine converts electrical energy into mechanical energy, which is the opposite process to an electrical generator. Energy can be used for a variety of purposes, ranging from a large power plant to the engine of an electric car.
It’s important to note that there is no such thing as free energy. All energy must be created from something and must consume a resource. Some kind of device is needed to translate energy from one form to another. For example, solar energy requires the use of solar panels to capture the sun’s rays and convert the heat into electricity. This rule also applies to mechanical electrical energy.
An electric generator uses electromagnetic induction to convert energy from mechanical to electrical. Mechanical energy is created by a wind turbine, hand crank or turbine steam engine. The generator is designed to absorb energy as it is created by the mechanical device. Mechanical energy moves the turbine blades, typically against the direction of the magnetic force. This movement generates electromagnetic energy.
The motor is used to convert electrical energy into mechanical energy. Electrical energy is received by the motor, which then creates mechanical energy by moving the rotor. This process is the exact opposite of mechanical energy, but has many of the same elements.
Both a generator and a motor have a rotor and a stator. A rotor is the actual rotating part of any alternator, generator or engine. The stator is the fixed part that holds the rotor in position. The armature actually generates electric current within the generator and is built into the rotor or stator. The magnetic field is created by a magnet mounted on the rotor or stator.
Electrical mechanical energy is a common source of energy for large power plants and other mechanical equipment. Electricity is in high demand, and this continued demand requires the development of new, more efficient ways to harness the results of mechanical electric power generation. High voltage energy cannot be stored, but must be available on demand. A career in electrical or mechanical engineering focuses on using this energy in a variety of devices. Positions are available in power generation stations, transformer stations, and related facilities.
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