The term Passive faults in Power system refers to:
- Under frequency
- Power swings
- All of these
- None of these
Correct answer: 4. All of these
The term Passive fault refers to the faults that are not actual faults but the conditions that are stressing the electrical system. All overvoltage, under frequency, overloading, and power swings are referred to as passive faults.
Passive faults ultimately lead to active faults.