A 2320.2 VA step-down transformer has the following parameters as referred to the primary side: winding resistance = 3.1 Ω and leakage reactance = 6.6 Ω and a transformation ratio of 2. The transformer is operating at full-load with a power-factor of 0.7071 lagging. If the no-load secondary voltage is 138.6 V, determine the percent voltage regulation of the transformer. Give your answer correct to 3 decimal places.

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 3.16P: A single-phase, 50-kVA,2400/240-V,60-Hz distribution transformer has the following parameters:...
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A 2320.2 VA step-down transformer has the following parameters as referred to the primary side: winding resistance = 3.1 Ω and leakage reactance = 6.6 Ω and a transformation ratio of 2. The transformer is operating at full-load with a power-factor of 0.7071 lagging. If the no-load secondary voltage is 138.6 V, determine the percent voltage regulation of the transformer. Give your answer correct to 3 decimal places.

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