Dear Student,
DC generator: 1. Used in battery charging
2. Used in electrical welding of steel.
AC generator: 1. Used in automobiles as alternators.
2. Used in power generation from windmills and hydtoelehydro dams.
​Electric motors: 1. Used in devices such as robots, air compressors, etc
2. Used in domestic appliances like ceiling fans, mixer grinders, etc
Regards