Answer the Ex (1) and (2) Tutorial27/5/2021Ex 1:20KVA, 2500/250VSOHZ,1- transformerhas the following test results:○.C、Test くし、V、 Side) :S.C. Test CH.V. Side):104U, 8ACompute the parameters of the approximate equivalentcircuít referred to the low Voltage side2 50 V, 1.4A, 105W320WEx2: Twotrausformers A and B are Connectedof (2+jl.5 )Rin parallelTheir impedances in secondary terms areZA = (0.15+ jo.5 )RTheir no-load terminal voltages areEA = 207 Lov andtoaloadand Zg = (0.1+jo.6) sLEB =205 L0 v. FindPower output cnd power factor of eachtransformertheEx3: The following resntswere obtainedona 30KVA300 0/110V transforeormmerノO.C. test : 3a00 VS.C. test0.5 A350W10 Aefficiencyo.8 P. f150V500WCalculate theatof the transformer(a) fullloadCb) half-loadunity P.fAlso Caleulate the kVA outont at whichthe efficiency is maximum

Answered: Image /qna-images/answer/03e14a54-c44c-4965-bd97-d4a6916e4319.jpg

Tutorial 27/5/2021 EX1: A 20KVA, 2500/250V, SoH,1- 1 - transformer has the following test results. ○.C.Test くし、V、 Side) : S.C. Test CH.V.Side): 104U, 8A Compute the parameters of the approximate equivadent Circuit referred to the low Voltage side. 2 50 V, 1.4A, 105W 104U, 8A, 320 W こ

Tutorial 27/5/2021 EX1: A 20KVA, 2500/250V, SoH,1- 1 - transformer has the following test results. ○.C.Test くし、V、 Side) : S.C. Test CH.V.Side): 104U, 8A Compute the parameters of the approximate equivadent Circuit referred to the low Voltage side. 2 50 V, 1.4A, 105W 104U, 8A, 320 W こ

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 3.65P: Reconsider Problem 3.64 with the change that now Tb includes both a transformer of the same turns...

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Question

Answer the Ex (1) and (2)

Tutorial
27/5/2021
Ex 1:
20KVA, 2500/250V
SOHZ,1- transformer
has the following test results:
○.C、Test くし、V、 Side) :
S.C. Test CH.V. Side):104U, 8A
Compute the parameters of the approximate equivalent
circuít referred to the low Voltage side
2 50 V, 1.4A, 105W
320W
Ex2: Two
trausformers A and B are Connected
of (2+jl.5 )R
in parallel
Their impedances in secondary terms are
ZA = (0.15+ jo.5 )R
Their no-load terminal voltages are
EA = 207 Lov and
to
aload
and Zg = (0.1+jo.6) sL
EB =
205 L0 v. Find
Power output cnd power factor of each
transformer
the
Ex3: The following resnts
were obtained
on
a 30KVA
300 0/110V transfore
ormmer
ノ
O.C. test : 3a00 V
S.C. test
0.5 A
350W
10 A
efficiency
o.8 P. f
150V
500W
Calculate the
at
of the transformer
(a) full
load
Cb) half-load
unity P.f
Also Caleulate the kVA outont at which
the efficiency is maximum

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