(a) Explain why the magnetising current of a transformer is less than that of an equivalent rotating electrical machine. (b) Draw the phasor diagram of a transformer with load considering all kind of voltage drop in the windings.

(a) Explain why the magnetising current of a transformer is less than that of an equivalent rotating electrical machine. (b) Draw the phasor diagram of a transformer with load considering all kind of voltage drop in the 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 3.31MCQ

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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

(a) Explain why the magnetising current of a transformer is less than that of an
equivalent rotating electrical machine.
(b) Draw the phasor diagram of a transformer with load considering all kind of
voltage drop in the windings.

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