The correct answer is C. Voltage remains constant irrespective of the load.
A flat compounded generator is a type of DC generator that has a constant voltage output regardless of the load. This is achieved by using a special field winding that is designed to provide a constant magnetic field regardless of the load current.
In a flat compounded generator, the field winding is connected in parallel with the armature winding. This means that the field current is always equal to the armature current. The field current is what creates the magnetic field in the generator, so by keeping the field current constant, the magnetic field is also constant.
A constant magnetic field means that the generator will always produce the same output voltage, regardless of the load. This makes flat compounded generators ideal for applications where a constant voltage is required, such as in power supplies and battery chargers.
The other options are incorrect because:
- Option A is incorrect because the voltage generated by a flat compounded generator is always equal to the rated voltage.
- Option B is incorrect because the generated voltage of a flat compounded generator is not proportional to the load on the generator.
- Option D is incorrect because the speed of a flat compounded generator does not vary in proportion to the load on the generator.