Simple Loop Generator

In Fig.3.4 is shown a single turn rectangular copper coil ABCD
moving about its own axis, a magnetic field provided by either
permanent magnets or electromagnets. The two ends of the coil are
joined to two slip-rings or discs a and b which are insulated from
each other and from the central shaft. Two collecting brushes (of
carbon or copper) press against the slip rings. Their function is to
collect the current induced in the coil and to convey it to the
external load resistance R.

Content

1.Working Theory:

2.Practical Generator

3.Armature Windings

More
http://faculty.ksu.edu.sa/eltamaly/Documents/Courses/
EE%20339/DC%20Machines2.pdf