Calculate equivalent resistance referred to primary in a transformer.

Q.  A 10 kVA, 2000 / 100v transformer has R1=1.5 ohm, R2=0.005 ohm, X1=2.5 ohm and X2=0.08 ohm. The equivalent resistance referred to primary is
- Published on 29 Oct 15

a. 3 ohm
b. 3.25 ohm
c. 3.5 ohm
d. 3.8 ohm

ANSWER: 3.5 ohm

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