Power System Protection MCQ Part 4
The heat produced on contact point due to electric current flow is least affected by which of the following factor
The heat produced on contact point due to electric current flow is least affected by which of the following factor:
- Contact resistance
- Magnitude of current
- Duration for which current flows
- Temperature of surrounding medium
Correct answer: 4. Temperature of surrounding medium
Plug setting of electromagnetic relays can be altered by varying
Plug setting of electromagnetic relays can be altered by varying:
- Air gap distance
- Spring tension
- Number of ampere turns
- Adjustable back stop
Correct answer: 3. Number of ampere turns
An isolator is designed to open a circuit under
An isolator is designed to open a circuit under:
- No load
- Half load
- Full load
- Any of above
Correct answer: 1. No load
The active recovery voltage in a circuit breaker depends on
The active recovery voltage in a circuit breaker depends on:
- Circuit condition
- Armature reaction
- Power factor
- All of these
Correct answer: 4. All of these
Series reactors are used to
Series reactors are used to:
- Improve voltage regulation
- Improve power factor
- Bring down the level of fault
- Improve transmission efficiency
Correct answer: 3. Bring down the level of fault
More PSP MCQ
- Power System Protection MCQ Part 1
- Power System Protection MCQ Part 2
- Power System Protection MCQ Part 3
- Power System Protection MCQ Part 4
- Power System Protection MCQ Part 5
- Power System Protection MCQ Part 6
- Power System Protection MCQ Part 7
- Power System Protection MCQ Part 8
- Power System Protection MCQ Part 9
- Power System Protection MCQ Part 10