Electrical Engineering (EE) Exam > Electrical Engineering (EE) Questions > Symmetrical fault currents are restricted bya...
Start Learning for Free
Symmetrical fault currents are restricted by
- a)System impedance
- b)System voltage profile
- c)System power rating
- d)D.C. component of fault current
Correct answer is option 'A'. Can you explain this answer?
| FREE This question is part of | Download PDF Attempt this Test |
Most Upvoted Answer
Symmetrical fault currents are restricted bya)System impedanceb)System...
Symmetrical Faults:
- In power system, it refers to type of fault which leads to short circuit of three phases. This may be either short circuit of three phases or three phases to ground fault.
- In symmetrical fault, fault currents in phases are symmetrical in the sense that their magnitudes are equal and they are equally displaced by an angle of 120°.
- Thus, a symmetrical fault may be assumed as a normal case but with high value of current in phases.
Three phase fault:
- In these type of faults, all the three phases i.e. R, Y and B are shorted. This can be assumed as the three lines are connected to a delta connected load with zero impedance in each phase.
- The current in lines will be symmetrical but with higher value. The value of fault current i.e. IR, IY and IB in such fault will only be limited by the source impedance as well as the impedance of line up to the point of fault.
Free Test
FREE
| Start Free Test |
Community Answer
Symmetrical fault currents are restricted bya)System impedanceb)System...
Explanation:
System Impedance:
Symmetrical fault currents are restricted by system impedance. The impedance of the system determines how much current will flow in the event of a fault. Higher system impedance will limit the fault current magnitude, providing a level of protection to the system.
Role of System Impedance:
- When a fault occurs in a power system, the fault current magnitude is determined by the system impedance.
- The higher the impedance, the lower the fault current magnitude.
- System impedance acts as a natural limiter for fault currents, preventing excessive current flow that can potentially damage equipment and pose safety hazards.
Impedance Matching:
- Matching system impedance to the designed level helps in controlling fault currents and ensuring the stability of the power system.
- Proper impedance coordination in the system design helps in limiting fault currents within safe levels.
Importance of Restricting Symmetrical Fault Currents:
- Restricting symmetrical fault currents is crucial for protecting equipment, minimizing damage, and ensuring the safety of personnel.
- High fault currents can lead to equipment failure, thermal damage, and even fire hazards.
- By limiting fault currents through system impedance, the overall reliability and stability of the power system are enhanced.
In conclusion, system impedance plays a significant role in restricting symmetrical fault currents in a power system. By understanding and appropriately managing system impedance, engineers can ensure the safety and reliability of the electrical infrastructure.
System Impedance:
Symmetrical fault currents are restricted by system impedance. The impedance of the system determines how much current will flow in the event of a fault. Higher system impedance will limit the fault current magnitude, providing a level of protection to the system.
Role of System Impedance:
- When a fault occurs in a power system, the fault current magnitude is determined by the system impedance.
- The higher the impedance, the lower the fault current magnitude.
- System impedance acts as a natural limiter for fault currents, preventing excessive current flow that can potentially damage equipment and pose safety hazards.
Impedance Matching:
- Matching system impedance to the designed level helps in controlling fault currents and ensuring the stability of the power system.
- Proper impedance coordination in the system design helps in limiting fault currents within safe levels.
Importance of Restricting Symmetrical Fault Currents:
- Restricting symmetrical fault currents is crucial for protecting equipment, minimizing damage, and ensuring the safety of personnel.
- High fault currents can lead to equipment failure, thermal damage, and even fire hazards.
- By limiting fault currents through system impedance, the overall reliability and stability of the power system are enhanced.
In conclusion, system impedance plays a significant role in restricting symmetrical fault currents in a power system. By understanding and appropriately managing system impedance, engineers can ensure the safety and reliability of the electrical infrastructure.
Attention Electrical Engineering (EE) Students!
To make sure you are not studying endlessly, EduRev has designed Electrical Engineering (EE) study material, with Structured Courses, Videos, & Test Series. Plus get personalized analysis, doubt solving and improvement plans to achieve a great score in Electrical Engineering (EE).
|
Explore Courses for Electrical Engineering (EE) exam
|
|
Similar Electrical Engineering (EE) Doubts
Top Courses for Electrical Engineering (EE)View all
Symmetrical fault currents are restricted bya)System impedanceb)System voltage profilec)System power ratingd)D.C. component of fault currentCorrect answer is option 'A'. Can you explain this answer?
Question Description
Symmetrical fault currents are restricted bya)System impedanceb)System voltage profilec)System power ratingd)D.C. component of fault currentCorrect answer is option 'A'. Can you explain this answer? for Electrical Engineering (EE) 2024 is part of Electrical Engineering (EE) preparation. The Question and answers have been prepared according to the Electrical Engineering (EE) exam syllabus. Information about Symmetrical fault currents are restricted bya)System impedanceb)System voltage profilec)System power ratingd)D.C. component of fault currentCorrect answer is option 'A'. Can you explain this answer? covers all topics & solutions for Electrical Engineering (EE) 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Symmetrical fault currents are restricted bya)System impedanceb)System voltage profilec)System power ratingd)D.C. component of fault currentCorrect answer is option 'A'. Can you explain this answer?.
Symmetrical fault currents are restricted bya)System impedanceb)System voltage profilec)System power ratingd)D.C. component of fault currentCorrect answer is option 'A'. Can you explain this answer? for Electrical Engineering (EE) 2024 is part of Electrical Engineering (EE) preparation. The Question and answers have been prepared according to the Electrical Engineering (EE) exam syllabus. Information about Symmetrical fault currents are restricted bya)System impedanceb)System voltage profilec)System power ratingd)D.C. component of fault currentCorrect answer is option 'A'. Can you explain this answer? covers all topics & solutions for Electrical Engineering (EE) 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Symmetrical fault currents are restricted bya)System impedanceb)System voltage profilec)System power ratingd)D.C. component of fault currentCorrect answer is option 'A'. Can you explain this answer?.
Solutions for Symmetrical fault currents are restricted bya)System impedanceb)System voltage profilec)System power ratingd)D.C. component of fault currentCorrect answer is option 'A'. Can you explain this answer? in English & in Hindi are available as part of our courses for Electrical Engineering (EE).
Download more important topics, notes, lectures and mock test series for Electrical Engineering (EE) Exam by signing up for free.
Here you can find the meaning of Symmetrical fault currents are restricted bya)System impedanceb)System voltage profilec)System power ratingd)D.C. component of fault currentCorrect answer is option 'A'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of
Symmetrical fault currents are restricted bya)System impedanceb)System voltage profilec)System power ratingd)D.C. component of fault currentCorrect answer is option 'A'. Can you explain this answer?, a detailed solution for Symmetrical fault currents are restricted bya)System impedanceb)System voltage profilec)System power ratingd)D.C. component of fault currentCorrect answer is option 'A'. Can you explain this answer? has been provided alongside types of Symmetrical fault currents are restricted bya)System impedanceb)System voltage profilec)System power ratingd)D.C. component of fault currentCorrect answer is option 'A'. Can you explain this answer? theory, EduRev gives you an
ample number of questions to practice Symmetrical fault currents are restricted bya)System impedanceb)System voltage profilec)System power ratingd)D.C. component of fault currentCorrect answer is option 'A'. Can you explain this answer? tests, examples and also practice Electrical Engineering (EE) tests.
|
|
Explore Courses for Electrical Engineering (EE) exam
|
|
Suggested Free Tests
Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
|
© EduRev
|
Education Revolution
|
Follow Us
|
Signup to see your scores
go up within 7 days!
Access 1000+ FREE Docs, Videos and Tests
Takes less than 10 seconds to signup