Correct Answer - Option 2 : charging batteries
Shunt generators are used where the main requirement is a constant voltage over a narrow load range.
Applications of shunt generator:
- Used for general lighting
- Used to charge the battery because they can be made to give constant output voltage
- Used for giving the excitation to the alternators
- Used for small power supply (such as a portable generator)
Applications of series generator:
- Used for supplying field excitation current in DC locomotives for regenerative breaking
- Used as boosters to compensate the voltage drop in the feeder in various types of distribution systems such as railway service
- Used in series arc lightening
Applications of compound generator:
- Cumulative compound generators (over compounded) are generally used for lighting, power supply purpose and for heavy power services because of their constant voltage property; these are also used for driving a motor
- The flat compounded generators are generally used for small distance operation, such as power supply for hotels, offices, homes, and lodges
- The differential compound wound generators are used for arc welding where huge voltage drop and constant current is required because of their large demagnetization armature reaction
