A 3 phase, 50 Hz, 434-V, supply is connected to a, Y-connected induction motor and synchronous motor. Impedance of each phase of induction motor is (1.25 +j2.17). The 3-phase synchronous motor draws a current of 120 A at 0.87 leading p.f. Two-wattmeter method is used to measure the total power. If the phase sequence is positive. Calculate a) reading on each wattmeter b) combined power factor.
A 3 phase, 50 Hz, 434-V, supply is connected to a, Y-connected induction motor and synchronous motor. Impedance of each phase of induction motor is (1.25 +j2.17). The 3-phase synchronous motor draws a current of 120 A at 0.87 leading p.f. Two-wattmeter method is used to measure the total power. If the phase sequence is positive. Calculate a) reading on each wattmeter b) combined power factor.
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
Chapter3: Power Transformers
Section: Chapter Questions
Problem 3.25P: Consider a single-phase electric system shown in Figure 3.33. Transformers are rated as follows:...
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