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The positive, negative and zero sequence impedances of a three-phase generator are Z1, Z2 and Z0 respectively. For a line-to-line fault with fault impedance Zf, the fault current is If1 = kIf, where If is the fault current with zero fault impedance. The relation between Zf and k is
  • a)
  • b)
  • c)
  • d)
Correct answer is option 'A'. Can you explain this answer?
Verified Answer
The positive, negative and zero sequence impedances of a three-phase g...
In line to line fault,
fault current with fault impedance zf is

fault current with zero fault impedance is,


⇒ z1 + z2 = k (z1 + z2 + zf)
⇒ z1 + z2 - k z1 - k z2 = k zf 
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Most Upvoted Answer
The positive, negative and zero sequence impedances of a three-phase g...
In line to line fault,
fault current with fault impedance zf is

fault current with zero fault impedance is,


⇒ z1 + z2 = k (z1 + z2 + zf)
⇒ z1 + z2 - k z1 - k z2 = k zf 
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The positive, negative and zero sequence impedances of a three-phase generator are Z1, Z2 and Z0 respectively. For a line-to-line fault with fault impedance Zf, the fault current is If1 = kIf, where If is the fault current with zero fault impedance. The relation between Zf and k isa)b)c)d)Correct answer is option 'A'. Can you explain this answer? for Electrical Engineering (EE) 2025 is part of Electrical Engineering (EE) preparation. The Question and answers have been prepared according to the Electrical Engineering (EE) exam syllabus. Information about The positive, negative and zero sequence impedances of a three-phase generator are Z1, Z2 and Z0 respectively. For a line-to-line fault with fault impedance Zf, the fault current is If1 = kIf, where If is the fault current with zero fault impedance. The relation between Zf and k isa)b)c)d)Correct answer is option 'A'. Can you explain this answer? covers all topics & solutions for Electrical Engineering (EE) 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for The positive, negative and zero sequence impedances of a three-phase generator are Z1, Z2 and Z0 respectively. For a line-to-line fault with fault impedance Zf, the fault current is If1 = kIf, where If is the fault current with zero fault impedance. The relation between Zf and k isa)b)c)d)Correct answer is option 'A'. Can you explain this answer?.
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