▶ A 25-KVA, 4000/400-V, 60-Hz transformer has the following parameters: ▶ R₁ =18 , XH = 25, R₂ 2, Xu = 180 m2, X₂ = 250 Χι m Ω, RcH =15 ΚΩ, and XΜΗ = 25 ΚΩ. ▸ If the open-circuit and short-circuit tests are performed on this transformer, what are the readings of the instruments in each case? > Voc= 400V; loc= 3.1A; Poc=1066.67W ос 1406.25W ос > Vsc= 385V; Isc= 6.25A; P, SC SC =

▶ A 25-KVA, 4000/400-V, 60-Hz transformer has the following parameters: ▶ R₁ =18 , XH = 25, R₂ 2, Xu = 180 m2, X₂ = 250 Χι m Ω, RcH =15 ΚΩ, and XΜΗ = 25 ΚΩ. ▸ If the open-circuit and short-circuit tests are performed on this transformer, what are the readings of the instruments in each case? > Voc= 400V; loc= 3.1A; Poc=1066.67W ос 1406.25W ос > Vsc= 385V; Isc= 6.25A; P, SC SC =

Power System Analysis and Design (MindTap Course List)

6th Edition

ISBN:9781305632134

Author:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma

Publisher:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma

Chapter3: Power Transformers

Section: Chapter Questions

Problem 3.5MCQ: For an ideal 2-winding transformer, an impedance Z2 connected across winding 2 (secondary) is...

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For an ideal 2-winding transformer, an impedance Z2 connected across winding 2 (secondary) is referred to winding 1 (primary) by multiplying Z2 by (a) The turns ratio (N1/N2) (b) The square of the turns ratio (N1/N2)2 (c) The cubed turns ratio (N1/N2)3
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