A 50 KVA , 4,400/220V transformer has R1 = 3.45 ohm ,R2 = 0.009 ohm.The values of reactances are X1 = 5.2 ohms , X2 = 0.015 ohm Calculate the transformer a) Equivalent resistance as referred to primary b) Equivalent resistance as referred to secondary c) Equivalent reactance as referred to both primary and secondary d) Equivalent impedance as referred to primary and secondary e) Total Cu.Loss ( Copper loss = P R) ,first using individual resistances of the two windings and secondly using equivalent resistances as referred to each side.
A 50 KVA , 4,400/220V transformer has R1 = 3.45 ohm ,R2 = 0.009 ohm.The values of reactances are X1 = 5.2 ohms , X2 = 0.015 ohm Calculate the transformer a) Equivalent resistance as referred to primary b) Equivalent resistance as referred to secondary c) Equivalent reactance as referred to both primary and secondary d) Equivalent impedance as referred to primary and secondary e) Total Cu.Loss ( Copper loss = P R) ,first using individual resistances of the two windings and secondly using equivalent resistances as referred to each side.
Introductory Circuit Analysis (13th Edition)
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ISBN:9780133923605
Author:Robert L. Boylestad
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Chapter1: Introduction
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answer d and e only.
Transcribed Image Text:A 50 KVA , 4,400/220V transformer has R1 = 3.45 ohm ,R2 = 0.009 ohm.The values of reactances are
X1 = 5.2 ohms , X2 = 0.015 ohm Calculate the transformer
a) Equivalent resistance as referred to primary
b) Equivalent resistance as referred to secondary
c) Equivalent reactance as referred to both primary and secondary
d) Equivalent impedance as referred to primary and secondary
e) Total Cu.Loss ( Copper loss = P R) ,first using individual resistances of the two windings and
secondly using equivalent resistances as referred to each side.
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