3. Two impedances, Z1 = 0.8 + j5.6 and Zz = 8-j16 and a single-phase motor are connected in parallel across 200 Vrms, 60HZ supply. The motor draws 5 kVA at 80% power factor lagging. Find the total complex power. A. 4-j3 kVA B.7+j5 kVA C. 6 + j2 kVA D. 1+ j7 kVA 4. A circuit has impedance of 3.464+j2.0 ohm is supplied from a source voltage of 240 volts, 60 Hz. What is the current when resistance is reduced by 50%? C. 72 A D. 54A A. 91 A В. 6ОА 5. A resistance of 30 ohms and an inductive reactance of 60 ohms are in series across 120 volts, 60 cycles source. Find the power factor in percent of the circuit? А. 45 В. 67 С. 87 R. 75

Power System Analysis and Design (MindTap Course List)
6th Edition
ISBN:9781305632134
Author:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma
Publisher:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma
Chapter2: Fundamentals
Section: Chapter Questions
Problem 2.16P: A single-phase, 120V(rms),60Hz source supplies power to a series R-L circuit consisting of R=10 and...
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3. Two impedances, Z1 = 0.8 + j5.6 and Zz = 8-j16 and a single-phase motor are connected in
parallel across 200 Vrms, 60HZ supply. The motor draws 5 kVA at 80% power factor lagging. Find
the total complex power.
A. 4-j3 kVA
%3D
C. 6 + j2 kVA
D. 1+ j7 kVA
B.7+j5 kVA
4. A circuit has impedance of 3.464+j2.0 ohm is supplied from a source voltage of 240 volts, 60
Hz. What is the current when resistance is reduced by 50%?
С. 72 А
D. 54A
A. 91 A
В. 6ОА
5. A resistance of 30 ohms and an inductive reactance of 60 ohms are in series across 120
volts, 60 cycles source. Find the power factor in percent of the circuit?
А. 45
В. 67
С. 87
D. 75
Transcribed Image Text:3. Two impedances, Z1 = 0.8 + j5.6 and Zz = 8-j16 and a single-phase motor are connected in parallel across 200 Vrms, 60HZ supply. The motor draws 5 kVA at 80% power factor lagging. Find the total complex power. A. 4-j3 kVA %3D C. 6 + j2 kVA D. 1+ j7 kVA B.7+j5 kVA 4. A circuit has impedance of 3.464+j2.0 ohm is supplied from a source voltage of 240 volts, 60 Hz. What is the current when resistance is reduced by 50%? С. 72 А D. 54A A. 91 A В. 6ОА 5. A resistance of 30 ohms and an inductive reactance of 60 ohms are in series across 120 volts, 60 cycles source. Find the power factor in percent of the circuit? А. 45 В. 67 С. 87 D. 75
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