Two impedances, Z1 = 2+j6 N and Z2 = 6-j12 N are connected in series with a 220-V 60-Hz supply. At what frequency will the circuit act as a purely resistive load? O 84.85 Hz O 116.62 Hz O 82.46 Hz O 120 Hz

Two impedances, Z1 = 2+j6 N and Z2 = 6-j12 N are connected in series with a 220-V 60-Hz supply. At what frequency will the circuit act as a purely resistive load? O 84.85 Hz O 116.62 Hz O 82.46 Hz O 120 Hz

Electricity for Refrigeration, Heating, and Air Conditioning (MindTap Course List)

10th Edition

ISBN:9781337399128

Author:Russell E. Smith

Publisher:Russell E. Smith

Chapter7: Alternating Current, Power Distribution, And Voltage Systems

Section: Chapter Questions

Problem 7RQ

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Question

Two impedances, Z1 = 2+j6 N and Z2 = 6-j12 N are connected in series with a 220-V 60-Hz supply. At what frequency will the circuit act as a purely resistive load?
O 84.85 Hz
O 116.62 Hz
O 82.46 Hz
O 120 Hz

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