HomeSearchRegisterLog inAnnouncement
Current Time

Announcement
Latest topics
» : “MAYOR JENNY A. BARZAGA 2nd Table Tennis Cup 2011"
electric motor I_icon_minitimeby cleamaes Tue Jan 31, 2012 4:20 pm

» 4Videosoft DVD to ipad suite helps you to rip DVD rapidly
electric motor I_icon_minitimeby skygirl Sat Nov 26, 2011 11:42 pm

» Real estate market paralyzed as giants fall into insolvency
electric motor I_icon_minitimeby mrthought Sat Oct 29, 2011 12:54 pm

» Vietnam office rents to fall 7% in 2012, Jones Lang Lasalle says
electric motor I_icon_minitimeby mrthought Sat Oct 29, 2011 12:53 pm

» Vietnam Struggles to Attract Foreign Property Investment
electric motor I_icon_minitimeby mrthought Sat Oct 29, 2011 12:52 pm

Poll
What brand of blade do you use ?
Butterfly
electric motor I_vote_lcap41%electric motor I_vote_rcap
 41% [ 18 ]
Stiga
electric motor I_vote_lcap18%electric motor I_vote_rcap
 18% [ 8 ]
DHS
electric motor I_vote_lcap5%electric motor I_vote_rcap
 5% [ 2 ]
Donic
electric motor I_vote_lcap14%electric motor I_vote_rcap
 14% [ 6 ]
Yasaka
electric motor I_vote_lcap7%electric motor I_vote_rcap
 7% [ 3 ]
729 Friendship
electric motor I_vote_lcap7%electric motor I_vote_rcap
 7% [ 3 ]
JOOLA
electric motor I_vote_lcap2%electric motor I_vote_rcap
 2% [ 1 ]
Killerspin
electric motor I_vote_lcap2%electric motor I_vote_rcap
 2% [ 1 ]
Andro
electric motor I_vote_lcap2%electric motor I_vote_rcap
 2% [ 1 ]
Xiom
electric motor I_vote_lcap2%electric motor I_vote_rcap
 2% [ 1 ]
Total Votes : 44
Affiliates
free forum
 

Share
 

 electric motor

Go down 
AuthorMessage
lunamoonfang



Male
Number of posts : 144
Location : VietNam
Member of : vernlen.forumotion.com
Registration date : 2010-11-22

electric motor Empty
PostSubject: electric motor   electric motor I_icon_minitimeSat Dec 18, 2010 1:26 am

An electric motor uses electrical energy to produce mechanical energy, very typically through the interaction of magnetic fields and current-carrying conductors. The reverse process, producing electrical energy from mechanical energy, is accomplished by an alternator, generator or dynamo. Many types of electric motors can be run as generators, and vice versa. For example a starter/generator for a gas turbine or Traction motors used on vehicles often perform both tasks.

Electric motors are found in applications as diverse as industrial fans, blowers and pumps, machine tools, household appliances, power tools, and disk drives. They may be powered by direct current (e.g., a battery powered portable device or motor vehicle), or by alternating current from a central electrical distribution grid. The smallest motors may be found in electric wristwatches. Medium-size motors of highly standardized dimensions and characteristics provide convenient mechanical power for industrial uses. The very largest electric motors are used for propulsion of large ships, and for such purposes as pipeline compressors, with ratings in the millions of watts. Electric motors may be classified by the source of electric power, by their internal construction, by their application, or by the type of motion they give.

The physical principle of production of mechanical force by the interactions of an electric current and a magnetic field was known as early as 1821. Electric motors of increasing efficiency were constructed throughout the 19th century, but commercial exploitation of electric motors on a large scale required efficient electrical generators and electrical distribution networks.

Some devices, such as magnetic solenoids and loudspeakers, although they generate some mechanical power, are not generally referred to as electric motors, and are usually termed actuators[1] and transducers,[2] respectively.
____________
student loans no cosigner
Frandsen pendler
Back to top Go down
 
electric motor
Back to top 
Page 1 of 1

Permissions in this forum:You cannot reply to topics in this forum
Vernlen Table Tennis & Chess Club :: All About Table Tennis ::   :: General-
Jump to: