The transformer is rated at 550/220 V. With the low-voltage winding shorted, it requires 25 V across the 550 V winding to permit rated current through both windings of the transformer. Calculate the percent impedance. 5.55 % 4.55 % 6.55 % O 3.55 %

The transformer is rated at 550/220 V. With the low-voltage winding shorted, it requires 25 V across the 550 V winding to permit rated current through both windings of the transformer. Calculate the percent impedance. 5.55 % 4.55 % 6.55 % O 3.55 %

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 3.28MCQ

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Concept explainers

Single Phase Transformer

A single-phase transformer is a type of power transformer. It is an electrical device that accepts converts the single phase alternating power into single phase alternating power. In this power conversion the voltage is stepped up or down. If the voltage is stepped up, the current will be stepped down and if the voltage is stepped down, the current will be stepped up.

Question

The transformer is rated at 550/220 V. With the low-voltage winding shorted, it requires 25 V
across the 550 V winding to permit rated current through both windings of the transformer.
Calculate the percent impedance.
O 5.55 %
O 4.55 %
O 6.55 %
O 3.55 %

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