tag:blogger.com,1999:blog-7901060613492883452.post1651585721650696747..comments2023-10-19T06:58:36.849-07:00Comments on electrical$ world.: vivek mishrahttp://www.blogger.com/profile/03927637212807574347noreply@blogger.comBlogger2125tag:blogger.com,1999:blog-7901060613492883452.post-76987243215481043732014-02-08T12:00:11.459-08:002014-02-08T12:00:11.459-08:00It is used their in way so that reversal of polari...It is used their in way so that reversal of polarities can be<br />done.therefore dc can be obtained from that semi cut rings through<br />brushes .<br />1.so that the reason the function of the commutator is to make easy<br />collection of current from the armature ... segments of<br />high-conductivity of hard-drawn or drop forged copper get used there.<br />2.the commutator bars which have low mechanical stress can be make<br />from pure hard-drawn copper.<br />3.In order to maintain cylindrical shape of the active commutator<br />surface for different rotation speeds and temperatures, forged copper used<br />4.the same forces should act on each of the commutator bar. the commutator bars<br />should have the same rigidity and identical freedom of the thermal<br />expansion.vivek mishrahttps://www.blogger.com/profile/03927637212807574347noreply@blogger.comtag:blogger.com,1999:blog-7901060613492883452.post-75275231917324534252014-02-02T05:28:11.465-08:002014-02-02T05:28:11.465-08:00explain about hard drawn or forged copper used in ...explain about hard drawn or forged copper used in commutator...??<br />Anonymoushttps://www.blogger.com/profile/09652113756775316502noreply@blogger.com