leading
lagging
unity
zero
Answer is Right!
Answer is Wrong!
The correct answer is B. lagging.
When the field of a synchronous motor is under-excited, the current drawn by the motor is leading the voltage. This is because the motor is acting as a capacitor, and capacitors draw leading current.
The other options are incorrect because:
- Option A is incorrect because the power factor will be lagging, not leading.
- Option C is incorrect because the power factor will not be unity.
- Option D is incorrect because the power factor will not be zero.
I hope this helps! Let me know if you have any other questions.