7. A source of 100 Volts rms is supplying a resistance 80 ohms in parallel with a 200mH inductor. To what angle is the current lag or lead? A. 46.7 deg. lag B. 43.3 deg. lag C. 46.7 deg. lead D. 43.3 deg. Lead
7. A source of 100 Volts rms is supplying a resistance 80 ohms in parallel with a 200mH inductor. To what angle is the current lag or lead? A. 46.7 deg. lag B. 43.3 deg. lag C. 46.7 deg. lead D. 43.3 deg. Lead
Introductory Circuit Analysis (13th Edition)
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ISBN:9780133923605
Author:Robert L. Boylestad
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Question
![7. A source of 100 Volts rms is supplying a resistance 80 ohms in parallel with a 200mH
inductor. To what angle is the current lag or lead?
A. 46.7 deg. lag
B. 43.3 deg. lag
C. 46.7 deg. lead
D. 43.3 deg. Lead
8. Two impedances Zı=2+j4 and Z2=R+j0, are connected in parallel. Determine R so that the pf
of the circuit is 0.9 lagging.
A. 3.2 ohms
B. 4.2 ohms
C. 2.4 ohms
D. 6.4 ohms
9. The power factor of a load on a 120 volt. 60HZ source is raised from 0.707 to 0.866 lagging
by connecting a 53 micro-farad capacitor across the load. What is the true power of the load in
watts?
C. 862
D. 268
А. 286
В. 682
10. A factory has an average demand of 176 kw at 70% power factor. What is the minimum size
of capacitor required to raise the power factor to 95%?
C. 122 KVAR
D. 157 KVAR
A. 165 KVAR
B. 82 KVAR](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F7531c1bb-5a92-4da5-b825-bab74be1376d%2F7992f222-5f89-451b-9ec0-4b6a2ff8bda7%2Fk1z8yla_processed.jpeg&w=3840&q=75)
Transcribed Image Text:7. A source of 100 Volts rms is supplying a resistance 80 ohms in parallel with a 200mH
inductor. To what angle is the current lag or lead?
A. 46.7 deg. lag
B. 43.3 deg. lag
C. 46.7 deg. lead
D. 43.3 deg. Lead
8. Two impedances Zı=2+j4 and Z2=R+j0, are connected in parallel. Determine R so that the pf
of the circuit is 0.9 lagging.
A. 3.2 ohms
B. 4.2 ohms
C. 2.4 ohms
D. 6.4 ohms
9. The power factor of a load on a 120 volt. 60HZ source is raised from 0.707 to 0.866 lagging
by connecting a 53 micro-farad capacitor across the load. What is the true power of the load in
watts?
C. 862
D. 268
А. 286
В. 682
10. A factory has an average demand of 176 kw at 70% power factor. What is the minimum size
of capacitor required to raise the power factor to 95%?
C. 122 KVAR
D. 157 KVAR
A. 165 KVAR
B. 82 KVAR
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