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A three-phase Y-Δ transformer is rated 400 MVA, 220 kV/22 kV. The short circuit impedance of the transformer measured on low voltage side is 0.121 Ω and because of the low value, it is considered equal to the leakage reactance. The per unit value of reactance to represent this transformer in a system whose base on the high voltage side of the transformer is 100 MVA, 230 kV is ___ (pu)
  • a)
    2.28 × 10-4 pu
  • b)
    0.0114 pu
  • c)
    0.0228 pu
  • d)
    1.14 × 10-4
Correct answer is option 'C'. Can you explain this answer?
Verified Answer
A three-phase Y-Δ transformer is rated 400 MVA, 220 kV/22 kV. Th...
On its own base the pu reactance of the transformer is,

On the chosen base the reactance becomes,
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A three-phase Y-Δ transformer is rated 400 MVA, 220 kV/22 kV. Th...
Connected generator can deliver more power than a single-phase generator of the same size because the three-phase system provides three separate phases of power that are offset by 120 degrees, resulting in a more constant power output. This allows for a more efficient use of the generator's capacity and reduces the risk of voltage fluctuations and power surges. Additionally, three-phase power is commonly used in industrial and commercial applications because it is more efficient for powering large motors and machinery.
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A three-phase Y-Δ transformer is rated 400 MVA, 220 kV/22 kV. The short circuit impedance of the transformer measured on low voltage side is 0.121 Ω and because of the low value, it is considered equal to the leakage reactance. The per unit value of reactance to represent this transformer in a system whose base on the high voltage side of the transformer is 100 MVA, 230 kV is ___ (pu)a)2.28 × 10-4pub)0.0114 puc)0.0228 pud)1.14 × 10-4Correct answer is option 'C'. Can you explain this answer?
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A three-phase Y-Δ transformer is rated 400 MVA, 220 kV/22 kV. The short circuit impedance of the transformer measured on low voltage side is 0.121 Ω and because of the low value, it is considered equal to the leakage reactance. The per unit value of reactance to represent this transformer in a system whose base on the high voltage side of the transformer is 100 MVA, 230 kV is ___ (pu)a)2.28 × 10-4pub)0.0114 puc)0.0228 pud)1.14 × 10-4Correct 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 A three-phase Y-Δ transformer is rated 400 MVA, 220 kV/22 kV. The short circuit impedance of the transformer measured on low voltage side is 0.121 Ω and because of the low value, it is considered equal to the leakage reactance. The per unit value of reactance to represent this transformer in a system whose base on the high voltage side of the transformer is 100 MVA, 230 kV is ___ (pu)a)2.28 × 10-4pub)0.0114 puc)0.0228 pud)1.14 × 10-4Correct 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 A three-phase Y-Δ transformer is rated 400 MVA, 220 kV/22 kV. The short circuit impedance of the transformer measured on low voltage side is 0.121 Ω and because of the low value, it is considered equal to the leakage reactance. The per unit value of reactance to represent this transformer in a system whose base on the high voltage side of the transformer is 100 MVA, 230 kV is ___ (pu)a)2.28 × 10-4pub)0.0114 puc)0.0228 pud)1.14 × 10-4Correct answer is option 'C'. Can you explain this answer?.
Solutions for A three-phase Y-Δ transformer is rated 400 MVA, 220 kV/22 kV. The short circuit impedance of the transformer measured on low voltage side is 0.121 Ω and because of the low value, it is considered equal to the leakage reactance. The per unit value of reactance to represent this transformer in a system whose base on the high voltage side of the transformer is 100 MVA, 230 kV is ___ (pu)a)2.28 × 10-4pub)0.0114 puc)0.0228 pud)1.14 × 10-4Correct 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 A three-phase Y-Δ transformer is rated 400 MVA, 220 kV/22 kV. The short circuit impedance of the transformer measured on low voltage side is 0.121 Ω and because of the low value, it is considered equal to the leakage reactance. The per unit value of reactance to represent this transformer in a system whose base on the high voltage side of the transformer is 100 MVA, 230 kV is ___ (pu)a)2.28 × 10-4pub)0.0114 puc)0.0228 pud)1.14 × 10-4Correct answer is option 'C'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of A three-phase Y-Δ transformer is rated 400 MVA, 220 kV/22 kV. The short circuit impedance of the transformer measured on low voltage side is 0.121 Ω and because of the low value, it is considered equal to the leakage reactance. The per unit value of reactance to represent this transformer in a system whose base on the high voltage side of the transformer is 100 MVA, 230 kV is ___ (pu)a)2.28 × 10-4pub)0.0114 puc)0.0228 pud)1.14 × 10-4Correct answer is option 'C'. Can you explain this answer?, a detailed solution for A three-phase Y-Δ transformer is rated 400 MVA, 220 kV/22 kV. The short circuit impedance of the transformer measured on low voltage side is 0.121 Ω and because of the low value, it is considered equal to the leakage reactance. The per unit value of reactance to represent this transformer in a system whose base on the high voltage side of the transformer is 100 MVA, 230 kV is ___ (pu)a)2.28 × 10-4pub)0.0114 puc)0.0228 pud)1.14 × 10-4Correct answer is option 'C'. Can you explain this answer? has been provided alongside types of A three-phase Y-Δ transformer is rated 400 MVA, 220 kV/22 kV. The short circuit impedance of the transformer measured on low voltage side is 0.121 Ω and because of the low value, it is considered equal to the leakage reactance. The per unit value of reactance to represent this transformer in a system whose base on the high voltage side of the transformer is 100 MVA, 230 kV is ___ (pu)a)2.28 × 10-4pub)0.0114 puc)0.0228 pud)1.14 × 10-4Correct answer is option 'C'. Can you explain this answer? theory, EduRev gives you an ample number of questions to practice A three-phase Y-Δ transformer is rated 400 MVA, 220 kV/22 kV. The short circuit impedance of the transformer measured on low voltage side is 0.121 Ω and because of the low value, it is considered equal to the leakage reactance. The per unit value of reactance to represent this transformer in a system whose base on the high voltage side of the transformer is 100 MVA, 230 kV is ___ (pu)a)2.28 × 10-4pub)0.0114 puc)0.0228 pud)1.14 × 10-4Correct answer is option 'C'. Can you explain this answer? tests, examples and also practice Electrical Engineering (EE) tests.
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