For capacitive loads the voltage regulation of alternator is:
- Positive
- Negative
- Zero
- Any of above
Correct answer: 2. Negative
In case of leading loads the terminal voltage of alternator will rise.
Voltage regulation is defined as:
VR = {V(nl) – V(fl)}/V(fl)
From above relation one can easily understand that a synchronous generator that is operating at a leading power factor has a negative voltage regulation