Question

Electric motors find several applications in different industries as these are capable of converting electric energy into mechanical energy. The application areas include power tools, pumps, fans, grinding mills, alternators, compressors, metal rolling, refiners, mine hoists, and propulsion. The increasing demand and installations of electric motors in marine, oil and gas, energy and power, metals, cement, mining, water and waste water, and pulp and paper industries are driving the growth of global electric motor market. These industries are dependent on extensive usage of machines, which require constant power supply. Electric motor powers individual machines and provide easy control at each point of operation. These motors improve safety in operations, power transmission efficiency and production efficiency. Moreover, these motors are capable of working in highly corrosive environments, which increase their demand in nuclear power plant and corrosive chemical and gases plants. The International Energy Agency (IEA) estimated that electric motor driven systems accounted for 43% to 46% of global electricity consumption in 2011, which resulted in 6,040 Mt CO2 emissions. The organization also reported that by 2030, without comprehensive and effective energy-efficiency policy measures, the energy consumption from electric motors would increase to 13,360 TW h per year, resulting in 8,750 MT CO2 emission per year. The high energy consumption through electric motors led to the development of energy efficient electric motors, which could result in reduced energy consumption and CO2 emissions.IEA estimated that implementation of efficiency improvements would reduce the global electricity demand by 7%. Different organizations are framing regulations for implementation of efficiency standards for electric motors. Different manufacturers are following regulations, such as minimum energy performance standards (MEPS), to limit the maximum amount of energy consumed by electric motor systems for specific tasks. Vendors are offering products and solutions that may improve the productivity and efficiency, while reducing energy consumption and environmental impacts. This would fuel the demand for electric motors with higher efficiency, and thus drive the growth of global electric motor market . A).What is the principle of electric motor? *
2 points
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Answer 1

Answer:

The principle of an electric motor is based on the current carrying conductor which produces magnetic field around it. A current carrying conductor is placed perpendicular to the magnetic field so that it experiences a force.