Electrical Engineering (EE) Exam  >  Electrical Engineering (EE) Questions  >  When a fault occurs in a high voltage transmi... Start Learning for Free
When a fault occurs in a high voltage transmission line, first the
  • a)
    circuit breaker operates then the relay.
  • b)
    relay operates, then successively the isolator and the circuit breaker.
  • c)
    relay operates then the circuit breaker.
  • d)
    isolator operates, then successively the relay and the circuit breaker.
Correct answer is option 'C'. Can you explain this answer?
Most Upvoted Answer
When a fault occurs in a high voltage transmission line, first thea)ci...
Answer:

Explanation:

Sequence of Operation in Fault Occurrence in High Voltage Transmission Line:

When a fault occurs in a high voltage transmission line, the following sequence of operations takes place:

1. Relay Operation:

The relay detects the fault in the transmission line and sends a signal to the circuit breaker to disconnect the faulty section of the line. The relay operates based on the current and voltage measurements at the line.

2. Circuit Breaker Operation:

The circuit breaker disconnects the faulty section of the line from the rest of the system. It ensures that the fault current is interrupted and does not damage the equipment or cause a fire.

3. Isolator Operation:

The isolator is operated manually after the circuit breaker has been tripped. It is used to isolate the faulty section of the line from the rest of the system. The isolator is used to provide an extra layer of protection to the system.

Conclusion:

In conclusion, when a fault occurs in a high voltage transmission line, the relay operates first, then the circuit breaker is tripped. The isolator is operated manually after the circuit breaker has been tripped to isolate the faulty section of the line from the rest of the system.
Explore Courses for Electrical Engineering (EE) exam

Top Courses for Electrical Engineering (EE)

When a fault occurs in a high voltage transmission line, first thea)circuit breaker operates then the relay.b)relay operates, then successively the isolator and the circuit breaker.c)relay operates then the circuit breaker.d)isolator operates, then successively the relay and the circuit breaker.Correct answer is option 'C'. Can you explain this answer?
Question Description
When a fault occurs in a high voltage transmission line, first thea)circuit breaker operates then the relay.b)relay operates, then successively the isolator and the circuit breaker.c)relay operates then the circuit breaker.d)isolator operates, then successively the relay and the circuit breaker.Correct answer is option 'C'. 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 When a fault occurs in a high voltage transmission line, first thea)circuit breaker operates then the relay.b)relay operates, then successively the isolator and the circuit breaker.c)relay operates then the circuit breaker.d)isolator operates, then successively the relay and the circuit breaker.Correct answer is option 'C'. 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 When a fault occurs in a high voltage transmission line, first thea)circuit breaker operates then the relay.b)relay operates, then successively the isolator and the circuit breaker.c)relay operates then the circuit breaker.d)isolator operates, then successively the relay and the circuit breaker.Correct answer is option 'C'. Can you explain this answer?.
Solutions for When a fault occurs in a high voltage transmission line, first thea)circuit breaker operates then the relay.b)relay operates, then successively the isolator and the circuit breaker.c)relay operates then the circuit breaker.d)isolator operates, then successively the relay and the circuit breaker.Correct answer is option 'C'. 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 When a fault occurs in a high voltage transmission line, first thea)circuit breaker operates then the relay.b)relay operates, then successively the isolator and the circuit breaker.c)relay operates then the circuit breaker.d)isolator operates, then successively the relay and the circuit breaker.Correct answer is option 'C'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of When a fault occurs in a high voltage transmission line, first thea)circuit breaker operates then the relay.b)relay operates, then successively the isolator and the circuit breaker.c)relay operates then the circuit breaker.d)isolator operates, then successively the relay and the circuit breaker.Correct answer is option 'C'. Can you explain this answer?, a detailed solution for When a fault occurs in a high voltage transmission line, first thea)circuit breaker operates then the relay.b)relay operates, then successively the isolator and the circuit breaker.c)relay operates then the circuit breaker.d)isolator operates, then successively the relay and the circuit breaker.Correct answer is option 'C'. Can you explain this answer? has been provided alongside types of When a fault occurs in a high voltage transmission line, first thea)circuit breaker operates then the relay.b)relay operates, then successively the isolator and the circuit breaker.c)relay operates then the circuit breaker.d)isolator operates, then successively the relay and the circuit breaker.Correct answer is option 'C'. Can you explain this answer? theory, EduRev gives you an ample number of questions to practice When a fault occurs in a high voltage transmission line, first thea)circuit breaker operates then the relay.b)relay operates, then successively the isolator and the circuit breaker.c)relay operates then the circuit breaker.d)isolator operates, then successively the relay and the circuit breaker.Correct answer is option 'C'. Can you explain this answer? tests, examples and also practice Electrical Engineering (EE) tests.
Explore Courses for Electrical Engineering (EE) exam

Top Courses for Electrical Engineering (EE)

Explore Courses
Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
10M+ students study on EduRev