Answered: A 50KVA, 500/1000V Y-Y Transformer has…

A 50KVA, 500/1000V Y-Y Transformer has per phase R=40, X=50, R_= open circuit, X=120k0 refer to high eq m eq voltage side. The equivalent circuit using per unit system equal:

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 3.34MCQ: Consider Figure 3.25 of the text for a transformer with off-nominal turns ratio. (i) The per-unit...

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Find the input resistance between points A and B of the following resistive network:

Question

A 50KVA, 500/1000V Y-Y Transformer has per phase
R=40, X=50, R_= open circuit, X=120k0 refer to high
eq
Teq
voltage side. The equivalent circuit using per unit system
equal:
m
Select one:
a. Re.pu=0, Xeg.pu=25
=0.2, X
=0, X¸
req,pu
`c.pu
b. R
=0.25
eq.pu
`eq,pu
c. Repu=00, Xm.pu
=600
`m,pu
`c.pu
d. Rea.pu
=0.25, Xm pu-600

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