A non–salient pole, three-phase, two-pole synchronous motor is connected in parallel with a three-phase, Y-connected load so that the per-phase equivalent circuit is as shown in Figure P19.46. The parallel combination is connected to a 220-V (line to line), 60-Hz, three-phase line. The load current IL is 25 A at a power factor of 0.866 inductive. The motor has XS = 2? and is operating with I f = 1 A and T = 50 N-m at a power angle of ?30°. (Neglect all losses for the motor.) Find IS , Pin (to the motor), the overall power factor (i.e., angle between I1 and VS ), and the total power drawn from the line.
Analysis:
You might also like to view...
Two technicians are discussing parking brake systems that mechanically actuate the rear disc brakes
Technician A says that the calipers are self-adjusting. Technician B says that the actuating cables are adjustable at the equalizer. Which technician is correct? A) Technician A only B) Technician B only C) Both technicians A and B D) Neither technician A nor B
Single-mode propagation has greater bandwidth than multimode propagation
Indicate whether the statement is true or false
Charging a refrigeration system refers to ____.
A. removing refrigerant from a system B. adding refrigerant to a system C. cleaning the refrigerant D. vaporizing the refrigerant
Two disadvantages of using CPM are _____.
a. difficulty in resetting milestones and dependencies b. limited in calculating cost and schedule variances c. limited capabilities in tracking levels and metrics d. complexity and required commitment