What was the primary significance of Zénobe Gramme's machine introduced in 1871?

Answer

It made DC generation commercially practical by using a ring armature

The Gramme machine, introduced in 1871, used a ring armature and was instrumental in making DC generation commercially viable for applications like powering arc lights and early industrial machinery.

What was the primary significance of Zénobe Gramme's machine introduced in 1871?
inventioninventorelectricityportabilitygenerator