Electrical Engineering (EE) Exam > Electrical Engineering (EE) Questions > When a fault occurs in a high voltage transmi...
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When a fault occurs in a high voltage transmission line, first the
- a)circuit breaker operates then the relay.
- b)relay operates then the circuit breaker.
- c)relay operates, then successively the isolator and 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...
Explanation:
When a fault occurs in a high voltage transmission line, various protection devices come into action to isolate the fault and protect the system from damage. The sequence of operation of these devices is as follows:
1. Relay operation: When a fault occurs, the relay senses the abnormal condition and sends a trip signal to the circuit breaker.
2. Isolator operation: The isolator is a mechanical switch used to isolate a section of the transmission line for maintenance or repair. In case of a fault, the isolator operates to isolate the faulty section from the rest of the system.
3. Circuit breaker operation: The circuit breaker is a device that opens and closes the circuit under normal and abnormal conditions. When the relay sends a trip signal, the circuit breaker operates to open the circuit and isolate the faulty section.
Therefore, the correct sequence of operation of protection devices during a fault in a high voltage transmission line is relay operation, isolator operation, and circuit breaker operation.
When a fault occurs in a high voltage transmission line, various protection devices come into action to isolate the fault and protect the system from damage. The sequence of operation of these devices is as follows:
1. Relay operation: When a fault occurs, the relay senses the abnormal condition and sends a trip signal to the circuit breaker.
2. Isolator operation: The isolator is a mechanical switch used to isolate a section of the transmission line for maintenance or repair. In case of a fault, the isolator operates to isolate the faulty section from the rest of the system.
3. Circuit breaker operation: The circuit breaker is a device that opens and closes the circuit under normal and abnormal conditions. When the relay sends a trip signal, the circuit breaker operates to open the circuit and isolate the faulty section.
Therefore, the correct sequence of operation of protection devices during a fault in a high voltage transmission line is relay operation, isolator operation, and circuit breaker operation.
Community Answer
When a fault occurs in a high voltage transmission line, first thea)ci...
First relay operating then breaker operating after isolators are opening. and is b. we can't open isolatoer without opening can.
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When a fault occurs in a high voltage transmission line, first thea)circuit breaker operates then the relay.b)relay operates then the circuit breaker.c)relay operates, then successively the isolator and the circuit breaker.d)isolator operates, then successively the relay and the circuit breaker.Correct answer is option 'C'. Can you explain this answer?
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When a fault occurs in a high voltage transmission line, first thea)circuit breaker operates then the relay.b)relay operates then the circuit breaker.c)relay operates, then successively the isolator and 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 the circuit breaker.c)relay operates, then successively the isolator and 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 the circuit breaker.c)relay operates, then successively the isolator and the circuit breaker.d)isolator operates, then successively the relay and the circuit breaker.Correct answer is option 'C'. Can you explain this answer?.
When a fault occurs in a high voltage transmission line, first thea)circuit breaker operates then the relay.b)relay operates then the circuit breaker.c)relay operates, then successively the isolator and 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 the circuit breaker.c)relay operates, then successively the isolator and 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 the circuit breaker.c)relay operates, then successively the isolator and the circuit breaker.d)isolator operates, then successively the relay and the circuit breaker.Correct answer is option 'C'. Can you explain this answer?.
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