E Motor Efficiencies  -  Electrical Technology Update

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1. Read the PDF download article entitled Buying an Energy-Efficient Electric Motor. Is this information useful to your business choices?
  http://smservice.com/litlist.htm 

2. From this glossary of motor terminology, how is motor efficiency defined?
  http://www.reliance.com/prodserv/motgen/b9652_e.htm

 

3. According to this chart, for a 3HP 1800RPM 4 pole motor, what is the best available nominal full load rating?
 http://www.eere.energy.gov/femp/pdfs/emotors.pdf 

 

4.  What is one reason that a Series E motor has better efficiency as illustrated in this drawing as #3?
 http://www.marathonelectric.com/motors/manuals/SB524.pdf 

 

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