Two wattmeters used to measure the power input in a 3-phase circuit indicate 1000 W and 500 W respectively, Find the power factor of the eircuit (i) when both wattmeter readings are positive ; and (ii) when the latter is obtained by reversing the current coil connections. |Ans. 0.866 (lag) ; 0.1889 (lag)}

Two wattmeters used to measure the power input in a 3-phase circuit indicate 1000 W and 500 W respectively, Find the power factor of the eircuit (i) when both wattmeter readings are positive ; and (ii) when the latter is obtained by reversing the current coil connections. |Ans. 0.866 (lag) ; 0.1889 (lag)}

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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