Power System Protection MCQs Part 20
Contents
- 1 Overvoltage surges in a power system may be caused by
- 2 Merz-price protection is employed for protection of
- 3 Which of following is used for protection of power system against travelling waves
- 4 Which of following is used for protection against direct lightning strokes
- 5 The ideal scheme for overhead transmission lines protection is
Overvoltage surges in a power system may be caused by
Overvoltage surges in a power system may be caused by:
- Switching
- Resonance
- Lightning
- All of these
Correct answer: 4. All of these
Merz-price protection is employed for protection of
Merz-price protection is employed for protection of:
- Alternators
- Transformers
- Both of these
- None of these
Correct answer: 3. Both of these
Which of following is used for protection of power system against travelling waves
Which of following is used for protection of power system against travelling waves:
- Earthing screens
- Overhead ground wires
- Surge diverters
- None of these
Correct answer: 3. Surge diverters
Which of following is used for protection against direct lightning strokes
Which of following is used for protection against direct lightning strokes:
- Lightning arrester
- Ground wire
- Both of these
- None of these
Correct answer: 3. Both of these
The ideal scheme for overhead transmission lines protection is
The ideal scheme for overhead transmission lines protection is:
- Distance protection
- Differential protection
- Time-graded overcurrent protection
- None of these
Correct answer: 1. Distance protection