An amplidyne generator has how many sets of brushes on the commutator?

An amplidyne generator is designed with two sets of brushes on the commutator. This configuration is essential for its operation, as it allows for the effective management of the amplified output from the generator. The first set of brushes interacts with the initial circuit and provides input signals, while the second set of brushes takes the amplified output, facilitating the handling of larger current levels and improved control over the machine's performance.

The dual brush design also aids in maintaining stable operation and reducing electrical noise, which is critical in applications where precision is important. The arrangement allows for feedback control and enhances the response to changes in load, making amplidynes highly effective in applications requiring high torque or variable speed outputs.