What power factor would be presented to the supply in each case and which method is the most economical of power?( 10 Marks

Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
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Q6: It is desired to operate a 100-W, 120-V
electric lamp at its current rating from a
240-V, 50-Hz supply. Give details of the
simplest manner in which this could be
done using (a) a resistor (b) a capacitor and
(c) an indicator having resistance of 10 .
What power factor would be presented to
the supply in each case and which method
is the most economical of power?( 10 Marks
Transcribed Image Text:Q6: It is desired to operate a 100-W, 120-V electric lamp at its current rating from a 240-V, 50-Hz supply. Give details of the simplest manner in which this could be done using (a) a resistor (b) a capacitor and (c) an indicator having resistance of 10 . What power factor would be presented to the supply in each case and which method is the most economical of power?( 10 Marks
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