When a direct voltage of 90 V is applied to a coil, 15 A direct current flows from the source. When 90 V, 50 Hz alternating voltage is applied, 9 A alternating current flows. What is the effective (active) power when an alternating voltage of 90 V, 50 Hz is applied to the coil? 486W O 1350W O 648W 1800W 684W

Electricity for Refrigeration, Heating, and Air Conditioning (MindTap Course List)
10th Edition
ISBN:9781337399128
Author:Russell E. Smith
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Chapter7: Alternating Current, Power Distribution, And Voltage Systems
Section: Chapter Questions
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When a direct voltage of 90 V is applied to a coil, 15 A direct current
flows from the source. When 90 V, 50 Hz alternating voltage is applied, 9
A alternating current flows. What is the effective (active) power when an
alternating voltage of 90 V, 50 Hz is applied to the coil?
486W
1350W
648W
1800W
684W
Transcribed Image Text:When a direct voltage of 90 V is applied to a coil, 15 A direct current flows from the source. When 90 V, 50 Hz alternating voltage is applied, 9 A alternating current flows. What is the effective (active) power when an alternating voltage of 90 V, 50 Hz is applied to the coil? 486W 1350W 648W 1800W 684W
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