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A 23-kVA, 2300/230-V, 60-Hz, step down transformer has the following resistance and leakage- reactance values: R1=40, R2=0.040, X1=120, and X2=0.12O. The transformer is operating at 75% of its rated load. If the power factor of the load is 0.866 leading. Determine the efficiency of the transformer.

A 23-kVA, 2300/230-V, 60-Hz, step down transformer has the following resistance and leakage- reactance values: R1=40, R2=0.040, X1=120, and X2=0.12O. The transformer is operating at 75% of its rated load. If the power factor of the load is 0.866 leading. Determine the efficiency of the transformer.

Introductory Circuit Analysis (13th Edition)
Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
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The first picture is the question the second pic i did not understand that step of %75 of the load means what ?
7:41 4 Step2 b) Lse Know tuat The efficiensy of the transfommer x x KVA x ws XI0O x=0.75) kVA - 23 Cos¢= 0-866 4.V Rm.r= (RLv) * Ev 2, Rey. r =Co.o4)X ( 2300) Ru.v=42 Resisteno refessed to primoy side Rp = R,t RH.V Rp = 4+4 Rp=8n Step3 c) ?
Transcribed Image Text:7:41 4 Step2 b) Lse Know tuat The efficiensy of the transfommer x x KVA x ws XI0O x=0.75) kVA - 23 Cos¢= 0-866 4.V Rm.r= (RLv) * Ev 2, Rey. r =Co.o4)X ( 2300) Ru.v=42 Resisteno refessed to primoy side Rp = R,t RH.V Rp = 4+4 Rp=8n Step3 c) ?
A 23-kVA, 2300/230-V, 60-Hz, step down transformer has the following resistance and leakage- reactance values: R1=40, R2=0.040, X1=120, and X2-0.120. The transformer is operating at 75% of its rated load. If the power factor of the load is 0.866 leading. Determine the efficiency of the transformer.
Transcribed Image Text:A 23-kVA, 2300/230-V, 60-Hz, step down transformer has the following resistance and leakage- reactance values: R1=40, R2=0.040, X1=120, and X2-0.120. The transformer is operating at 75% of its rated load. If the power factor of the load is 0.866 leading. Determine the efficiency of the transformer.
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