I agree. A lot of us have libraries full of reference materials. The useful part is finding relevant passages in those reference materials as well as adding any relevant commentary..
The only reason that I did not interfere was that long discussion has been done and still there is no agreement. Since the real questioned has already been asnwered many times and there is only dispute on single phase and polyphase system and connection method. According to me,
An ac generator designed to develop a single sinusoidal voltage for
each rotation of the shaft (rotor) is referred to as a single-phase ac generator.
If the number of coils on the rotor is increased in a specified
manner, the result is a polyphase ac generator, which develops more
than one ac phase voltage per rotation of the rotor.
The number of phase voltages that can be produced by a polyphase
generator is not limited to three. Any number of phases can be obtained
by spacing the windings for each phase at the proper angular position
around the stator. Some electrical systems operate more efficiently if
more than three phases are used. One such system involves the process
of rectification, which is used to convert an alternating output to one
having an average, or dc, value. The greater the number of phases, the
smoother the dc output of the system.
Please download this pdf file too from below link
and see these pages
Page-43 : combination of polyphase current
Page-45 : Two phase system and continue to page-46
Page-176 : Chapter X: Polyphase transformer
Page-179: Phase transformation to Page-181