The correct answer is D. A separately excited generator as compared to a self-excited generator has all above features.
A separately excited generator is a type of electric generator that uses a separate power source to excite the field winding. This means that the voltage of the generator is not dependent on the load current, which makes it more stable and amenable to better voltage control.
In a self-excited generator, the field winding is excited by the current that is generated by the generator itself. This means that the voltage of the generator is dependent on the load current, which can make it less stable and more difficult to control the voltage.
Here is a more detailed explanation of each option:
- Option A: Is amenable to better voltage control. A separately excited generator is more amenable to better voltage control than a self-excited generator because the voltage of the generator is not dependent on the load current. This means that the voltage of the generator can be controlled more easily by adjusting the field current.
- Option B: Is more stable. A separately excited generator is more stable than a self-excited generator because the voltage of the generator is not dependent on the load current. This means that the generator is less likely to experience voltage fluctuations or instability when the load current changes.
- Option C: Has exciting current independent of load current. A separately excited generator has exciting current independent of load current because the field winding is excited by a separate power source. This means that the voltage of the generator is not affected by the load current, which makes the generator more stable and amenable to better voltage control.
I hope this explanation is helpful!