The description is sufficient for this device to be constructed. The phasor diagram of the currents and voltages involved in the two-wattmeter are projected; the current phasors can be rotated to correspond to various power factors. Point-by-point consideration clarifies the effect on instrumental readings.
Get full access to this article
View all access options for this article.
References
1.
ShepherdJ.MortonA. H. and SpenceL. F.Higher Electrical Engineering. Pitman (2nd edition) pp. 108–9.
2.
HughesE.Electrical Technology. Longman (4th Ed.1969) p. 378, p. 380 and Fig. 13.32.
3.
DoverA. T.Theory and Practice of Alternating Circuit, Pitman p. 195 and Fig. 130.
