Electrical Engineering (EE) Exam > Electrical Engineering (EE) Questions > Zero-sequence fault current is absent when fa... Start Learning for Free
Zero-sequence fault current is absent when fault is
- a)single-line-to ground fault.
- b)line-to-line ground fault.
- c)double-line-to ground fault.
- d)line-to-line
Correct answer is option 'D'. Can you explain this answer?
Most Upvoted Answer
Zero-sequence fault current is absent when fault isa)single-line-to gr...
-Zero-sequence fault current is a current or voltage unbalance between phases in magnitude or phase angle gives rise to negative and zero-sequence components.
-The negative sequence component has a rotation opposite that of the power system.
-The zero-sequence component represents an unbalance that causes current flow in the neutral.
-Zero-sequence fault current is absent when fault is line-to-line.
Free Test
FREE
| Start Free Test |
Community Answer
Zero-sequence fault current is absent when fault isa)single-line-to gr...
Zero-Sequence Fault Current in Power Systems
Zero-sequence fault current is an important parameter in power systems, which refers to the current flowing in the neutral conductor or the ground during a fault. Generally, there are three types of faults that can occur in a power system- single-line-to-ground fault, line-to-line fault, and double-line-to-ground fault.
Single-Line-to-Ground Fault
In a single-line-to-ground fault, one conductor of a three-phase system comes in contact with the ground. This type of fault is the most common in power systems and can cause significant damage to equipment and the power system itself. During a single-line-to-ground fault, zero-sequence current flows in the ground and neutral conductors. Hence, zero-sequence fault current is present in this type of fault.
Line-to-Line Fault
In a line-to-line fault, two conductors of a three-phase system come in contact with each other. This type of fault is less common than single-line-to-ground faults and can also cause significant damage to equipment and the power system. During a line-to-line fault, zero-sequence current does not flow in the ground or neutral conductors. Hence, zero-sequence fault current is absent in this type of fault.
Double-Line-to-Ground Fault
In a double-line-to-ground fault, two conductors of a three-phase system come in contact with the ground. This type of fault is relatively rare and can cause significant damage to equipment and the power system. During a double-line-to-ground fault, zero-sequence current flows in the ground and neutral conductors. Hence, zero-sequence fault current is present in this type of fault.
Line-to-Line Fault
In a line-to-line fault, two conductors of a three-phase system come in contact with each other. This type of fault is less common than single-line-to-ground faults and can also cause significant damage to equipment and the power system. During a line-to-line fault, zero-sequence current does not flow in the ground or neutral conductors. Hence, zero-sequence fault current is absent in this type of fault.
Conclusion
In conclusion, zero-sequence fault current is absent during a line-to-line fault in a power system. This is because there is no contact between the ground and conductors, and hence, no current flows in the ground or neutral conductors. However, zero-sequence fault current is present during a single-line-to-ground fault and a double-line-to-ground fault.
Zero-sequence fault current is an important parameter in power systems, which refers to the current flowing in the neutral conductor or the ground during a fault. Generally, there are three types of faults that can occur in a power system- single-line-to-ground fault, line-to-line fault, and double-line-to-ground fault.
Single-Line-to-Ground Fault
In a single-line-to-ground fault, one conductor of a three-phase system comes in contact with the ground. This type of fault is the most common in power systems and can cause significant damage to equipment and the power system itself. During a single-line-to-ground fault, zero-sequence current flows in the ground and neutral conductors. Hence, zero-sequence fault current is present in this type of fault.
Line-to-Line Fault
In a line-to-line fault, two conductors of a three-phase system come in contact with each other. This type of fault is less common than single-line-to-ground faults and can also cause significant damage to equipment and the power system. During a line-to-line fault, zero-sequence current does not flow in the ground or neutral conductors. Hence, zero-sequence fault current is absent in this type of fault.
Double-Line-to-Ground Fault
In a double-line-to-ground fault, two conductors of a three-phase system come in contact with the ground. This type of fault is relatively rare and can cause significant damage to equipment and the power system. During a double-line-to-ground fault, zero-sequence current flows in the ground and neutral conductors. Hence, zero-sequence fault current is present in this type of fault.
Line-to-Line Fault
In a line-to-line fault, two conductors of a three-phase system come in contact with each other. This type of fault is less common than single-line-to-ground faults and can also cause significant damage to equipment and the power system. During a line-to-line fault, zero-sequence current does not flow in the ground or neutral conductors. Hence, zero-sequence fault current is absent in this type of fault.
Conclusion
In conclusion, zero-sequence fault current is absent during a line-to-line fault in a power system. This is because there is no contact between the ground and conductors, and hence, no current flows in the ground or neutral conductors. However, zero-sequence fault current is present during a single-line-to-ground fault and a double-line-to-ground fault.
 | Explore Courses for Electrical Engineering (EE) exam |  |
Top Courses for Electrical Engineering (EE)View all
Top Courses for Electrical Engineering (EE)
Question Description
Zero-sequence fault current is absent when fault isa)single-line-to ground fault.b)line-to-line ground fault.c)double-line-to ground fault.d)line-to-lineCorrect answer is option 'D'. Can you explain this answer? for Electrical Engineering (EE) 2026 is part of Electrical Engineering (EE) preparation. The Question and answers have been prepared according to the Electrical Engineering (EE) exam syllabus. Information about Zero-sequence fault current is absent when fault isa)single-line-to ground fault.b)line-to-line ground fault.c)double-line-to ground fault.d)line-to-lineCorrect answer is option 'D'. Can you explain this answer? covers all topics & solutions for Electrical Engineering (EE) 2026 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Zero-sequence fault current is absent when fault isa)single-line-to ground fault.b)line-to-line ground fault.c)double-line-to ground fault.d)line-to-lineCorrect answer is option 'D'. Can you explain this answer?.
Zero-sequence fault current is absent when fault isa)single-line-to ground fault.b)line-to-line ground fault.c)double-line-to ground fault.d)line-to-lineCorrect answer is option 'D'. Can you explain this answer? for Electrical Engineering (EE) 2026 is part of Electrical Engineering (EE) preparation. The Question and answers have been prepared according to the Electrical Engineering (EE) exam syllabus. Information about Zero-sequence fault current is absent when fault isa)single-line-to ground fault.b)line-to-line ground fault.c)double-line-to ground fault.d)line-to-lineCorrect answer is option 'D'. Can you explain this answer? covers all topics & solutions for Electrical Engineering (EE) 2026 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Zero-sequence fault current is absent when fault isa)single-line-to ground fault.b)line-to-line ground fault.c)double-line-to ground fault.d)line-to-lineCorrect answer is option 'D'. Can you explain this answer?.
Solutions for Zero-sequence fault current is absent when fault isa)single-line-to ground fault.b)line-to-line ground fault.c)double-line-to ground fault.d)line-to-lineCorrect answer is option 'D'. 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 Zero-sequence fault current is absent when fault isa)single-line-to ground fault.b)line-to-line ground fault.c)double-line-to ground fault.d)line-to-lineCorrect answer is option 'D'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of Zero-sequence fault current is absent when fault isa)single-line-to ground fault.b)line-to-line ground fault.c)double-line-to ground fault.d)line-to-lineCorrect answer is option 'D'. Can you explain this answer?, a detailed solution for Zero-sequence fault current is absent when fault isa)single-line-to ground fault.b)line-to-line ground fault.c)double-line-to ground fault.d)line-to-lineCorrect answer is option 'D'. Can you explain this answer? has been provided alongside types of Zero-sequence fault current is absent when fault isa)single-line-to ground fault.b)line-to-line ground fault.c)double-line-to ground fault.d)line-to-lineCorrect answer is option 'D'. Can you explain this answer? theory, EduRev gives you an ample number of questions to practice Zero-sequence fault current is absent when fault isa)single-line-to ground fault.b)line-to-line ground fault.c)double-line-to ground fault.d)line-to-lineCorrect answer is option 'D'. 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.
