3) The losses in a 20 kVA, 2000/250 V transformer are as follows: Iron loss = 300 W, Full load copper loss = 320 W. Calculate (a) the efficiency at ½ load at 0.9 pf and (b) the maximum efficiency at 0.85 pf. Subject: Electrical Apparatus and Divices
3) The losses in a 20 kVA, 2000/250 V transformer are as follows: Iron loss = 300 W, Full load copper loss = 320 W. Calculate (a) the efficiency at ½ load at 0.9 pf and (b) the maximum efficiency at 0.85 pf. Subject: Electrical Apparatus and Divices
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 3.32MCQ
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3) The losses in a 20 kVA, 2000/250 V transformer are as follows: Iron loss = 300 W, Full load copper loss =
320 W. Calculate (a) the efficiency at ½ load at 0.9 pf and (b) the maximum efficiency at 0.85 pf.
Subject: Electrical Apparatus and Divices
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