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0 The instrument readings obtained from open and short-circuit tests on 25kVA, 1000/240V, 50Hz transformer are: O.C. test: V=240V; I= 5A; W=240W; V, W and I were in the low-voltage side. S.C. test: V = 30V; I=20A; W=250W with low voltage winding short circuited. Compute: 1- The equivalent constants referred to the primary. X & X 2- Efficiency for full and half-load at 0.8 p.f. 3- Maximum efficiency. 4- The voltage regulation-up for full-load and 0.8 p.f. lagging. خوش

0 The instrument readings obtained from open and short-circuit tests on 25kVA, 1000/240V, 50Hz transformer are: O.C. test: V=240V; I= 5A; W=240W; V, W and I were in the low-voltage side. S.C. test: V = 30V; I=20A; W=250W with low voltage winding short circuited. Compute: 1- The equivalent constants referred to the primary. X & X 2- Efficiency for full and half-load at 0.8 p.f. 3- Maximum efficiency. 4- The voltage regulation-up for full-load and 0.8 p.f. lagging. خوش

Introductory Circuit Analysis (13th Edition)
Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
Chapter1: Introduction
Section: Chapter Questions
Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...
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لارده The instrument readings obtained from open and short-circuit tests on 25kVA, 1000/240V, 50Hz transformer are: O.C. test: V=240V; I= 5A; W=240W; V, W and I were in the low-voltage side. S.C. test: V = 30V; I=20A; W=250W with low voltage winding short circuited. Compute: XX 1-The equivalent constants referred to the primary. 2- Efficiency for full and half-load at 0.8 p.f. 3- Maximum efficiency. 4- The voltage regulation-up for full-load and 0.8 p.f. lagging. موش
Transcribed Image Text:لارده The instrument readings obtained from open and short-circuit tests on 25kVA, 1000/240V, 50Hz transformer are: O.C. test: V=240V; I= 5A; W=240W; V, W and I were in the low-voltage side. S.C. test: V = 30V; I=20A; W=250W with low voltage winding short circuited. Compute: XX 1-The equivalent constants referred to the primary. 2- Efficiency for full and half-load at 0.8 p.f. 3- Maximum efficiency. 4- The voltage regulation-up for full-load and 0.8 p.f. lagging. موش
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