Find the regulation of an AC g voltage of 3240 V at 80 percen 20 % 27 % 35 % none of the above Will the percent regulation at u 80 percent lagging power facto larger smaller same none of the above
Find the regulation of an AC g voltage of 3240 V at 80 percen 20 % 27 % 35 % none of the above Will the percent regulation at u 80 percent lagging power facto larger smaller same none of the above
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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Step 1
6 A)
The no load voltage is 3240V.
Full load voltage is 2400V.
The power factor is 80% lagging
The voltage regulation is given by:
Voltage regulation = (No load voltage – Full load voltage) / Full load voltage * 100%
Voltage regulation = (3240 – 2400) / 3240 *100%
Voltage regulation =25.9%
This is the regulation at unity power factor. The regulation at 0.8 power factor lagging becomes:
Voltage regulation = 25.9*0.8
Voltage regulation = 20%
So, the regulation of the transformer at 0.8 lagging power factor is 20%.
Therefore, the correct option is (a).
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