Answered: 4. A step-down transformer is used to…

4. A step-down transformer is used to change 220 to 12 V. If a resistive load consuming 3mW is connected to the 12 V side, what is the current due to this load in the secondary and primary windings?

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 3.10P: A single-phase step-down transformer is rated 13MVA,66kV/11.5kV. With the 11.5 kV winding...

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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

4. A step-down transformer is used to change 220 to 12 V. If a resistive load consuming 3mW is
connected to the 12 V side, what is the current due to this load in the secondary and primary
windings?

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