A cumulatively compounded dc generator is operating properly as a flat-compounded dc generator. The machine is then shut down, and its shunt field connections are reversed.
(a) If this generator is turned in the same direction as before, will an output voltage be built up at its terminals? Why or why not?
(b) Will the voltage build up for rotation in the opposite direction? Why or why not?
(c) For the direction of rotation in which a voltage builds up, will the generator be cumulatively or differentially compounded?