September 15th, 2008
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A commutator converts alternating voltage into direct voltage.A commutator is a cylindrical structure built up of segments made of hard drawn copper.These segments separated from each other and from frame by means of mica strips.These segments are connected to the winding by means of risers .The risers have air spaces between one another or that [...]
Written by John on September 15th, 2008 with 1 comment.
Read more articles on Construction of D.C. Machines and Direct Current Machines and Electrical Machines.
The armature windings are placed or housed in the slots grooved on the surface of armature and and are so spaced such that one coils side or say a conductor of coil comes under north pole and the other coilside or second conductor comes under south pole. Generally in D.C. machines two layer windings with [...]
Written by John on September 15th, 2008 with no comments.
Read more articles on Construction of D.C. Machines and Direct Current Machines and Electrical Machines.
The armature consists of a core and winding.Due to the good magnetic properties of iron it is used as the armature core.Iron is also a good conductor of electricity so the rotation of iron core in the magnetic field could produce a current in the core and this current called eddy current cause the wastage [...]
Written by John on September 15th, 2008 with 1 comment.
Read more articles on Construction of D.C. Machines and Direct Current Machines and Electrical Machines.
