.. The primary resistance of a 440/1 10-V transformer is 0.5 Q and the secondary resistance is 0.04 n. When 440 V is applied to the primary and secondary is left open-circuited, 200 W is drawn from the supply. Find the secondary current which will give maximum efficiency and cakulate this efficiency for a load having unity power factor. [53 A ; 93.58%]

.. The primary resistance of a 440/1 10-V transformer is 0.5 Q and the secondary resistance is 0.04 n. When 440 V is applied to the primary and secondary is left open-circuited, 200 W is drawn from the supply. Find the secondary current which will give maximum efficiency and cakulate this efficiency for a load having unity power factor. [53 A ; 93.58%]

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 3.57P: A two-winding single-phase transformer rated 60kVA,240/1200V,60Hz, has an efficiency of 0.96 when...

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