A 50-Hz, 250-V single-phase power line has the following loads placed across it in parallel : 4 kW at a p.f. of 0.8 lagging ; 6 kVA at a p.f. of 0.6 lagging; 5 kVA which includes 1.2 KVAR leading. Deter- mine the overall p.f. of the system and the capacitance of the capacitor which, if connected across the mains would restore the power factor to unity. [0.844 lag ; 336 µF]

A 50-Hz, 250-V single-phase power line has the following loads placed across it in parallel : 4 kW at a p.f. of 0.8 lagging ; 6 kVA at a p.f. of 0.6 lagging; 5 kVA which includes 1.2 KVAR leading. Deter- mine the overall p.f. of the system and the capacitance of the capacitor which, if connected across the mains would restore the power factor to unity. [0.844 lag ; 336 µF]

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 2.13MCQ

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