For a given developed power, a synchronous motor operating from a constant voltage and constant frequency supply, will draw the minimum and maximum armature currents, Imin and Imax respectively, corresponding to
A. Imin at unity pf, but Imax at zero pf.
B. Imax at unity pf, but Imin at zero pf.
C. both Imin and Imax at unity pf.
D. both Imin and Imax at zero pf.
Answer:A
For a given developed power, a synchronous motor operating from a constant voltage and constant frequency supply, will draw the minimum and maximum armature currents, Imin and Imax respectively, corresponding to
A. Imin at unity pf, but Imax at zero pf. B. Imax at unity pf, but Imin at zero pf. C. both Imin and Imax at unity pf. D. both Imin and Imax at zero pf.