How is energy conserved in an electric motor?
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Answer: Energy efficient motors use less electricity, run cooler, and often last longer than NEMA (National Electrical Manufacturers Association) B motors of the same size. ... Energy efficient electric motors utilize improved motor design and high quality materials to reduce motor losses, therefore improving motor efficiency.
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In motor action, the electric power is taken as the input from the main supply. The mechanical energy obtained from the output is not fully utilised. The fraction of the energy is dissipated in frictional losses (friction and windage).
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