The no-load current of a transformer is 5 A at 0.3 power factor when connected across 200 V, 50 Hz supply. The number of turns on the primary is half that of the secondary. Find the primary current if a load taking 15 A at a lagging power factor of 80% is connected across the secondary

The no-load current of a transformer is 5 A at 0.3 power factor when connected across 200 V, 50 Hz supply. The number of turns on the primary is half that of the secondary. Find the primary current if a load taking 15 A at a lagging power factor of 80% is connected across the secondary

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 3.5MCQ: For an ideal 2-winding transformer, an impedance Z2 connected across winding 2 (secondary) is...

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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 no-load current of a transformer is 5 A at 0.3
power factor when connected across 200 V, 50 Hz
supply. The number of turns on the primary is half
that of the secondary. Find the primary current if a
load taking 15 A at a lagging power factor of 80% is
connected across the secondary

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