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A transformer rated at a maximum of 25kVA supplies a 12kW load at power factor 0.60 lagging. a) What percent of the transformer rating does this load represent? b) How many kW in additional load may be added at unity power factor before the transformer exceeds its rated kVA? c) Draw the power triangle before and after the additional load. d) If the additional load has a power factor of 0.866 leading, how many kVA may be added without exceeding the transformer rating?

A transformer rated at a maximum of 25kVA supplies a 12kW load at power factor 0.60 lagging. a) What percent of the transformer rating does this load represent? b) How many kW in additional load may be added at unity power factor before the transformer exceeds its rated kVA? c) Draw the power triangle before and after the additional load. d) If the additional load has a power factor of 0.866 leading, how many kVA may be added without exceeding the transformer rating?

Introductory Circuit Analysis (13th Edition)
Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
Chapter1: Introduction
Section: Chapter Questions
Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...
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ANSWER ONLY SUBQUESTION 'D' PLEASE. TYIA

A transformer rated at a maximum of 25kVA supplies a 12kW load at power factor 0.60 lagging. a) What percent of the transformer rating does this load represent? b) How many kW in additional load may be added at unity power factor before the transformer exceeds its rated kVA? c) Draw the power triangle before and after the additional load. d) If the additional load has a power factor of 0.866 leading, how many kVA may be added without exceeding the transformer rating?
Transcribed Image Text:A transformer rated at a maximum of 25kVA supplies a 12kW load at power factor 0.60 lagging. a) What percent of the transformer rating does this load represent? b) How many kW in additional load may be added at unity power factor before the transformer exceeds its rated kVA? c) Draw the power triangle before and after the additional load. d) If the additional load has a power factor of 0.866 leading, how many kVA may be added without exceeding the transformer rating?
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