A compound wound DC generator has a combination of shunt and which other characteristics?

In a compound wound DC generator, the correct additional characteristic is the series winding. This configuration combines both shunt and series windings to improve the generator's performance and voltage regulation under varying load conditions.

The shunt winding is connected parallel to the load, which regulates voltage by providing a constant field strength. Meanwhile, the series winding is connected in series with the load, meaning it carries the same current as the load. As the load increases, the current flowing through the series winding also increases, enhancing the field strength and thereby providing additional voltage as needed. This combination allows the compound generator to maintain stable voltage output across a wide range of operating conditions.

In contrast, characteristics like induction, separately-excited, and parallel do not describe a compound wound generator accurately. Induction refers to a different type of generator or motor, where electromagnetic induction principles are utilized without a commutating feature, thus not applicable here. Separately-excited generators rely on external sources for field excitation, lacking the internal combination of shunt and series windings found in compound wound designs. Finally, parallel characteristics are linked to configurations that might have multiple generators synchronized, but it does not pertain to the specific function of a compound wound generator.