We have a six-pole 440-v-rms 60-hz delta connected, Electrical Engineering

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We have a six-pole 440-v-rms 60-hz delta connected

We have a six-pole, 440-V-rms, 60-Hz delta connected synchronous motor operating with a constant developed power of 20 h p, unity power factor, and a torque angle of 10°. Then, the field current is reduced such that Br is reduced in magnitude by 25 percent. Find the new torque angle and power factor. Is the new power factor leading or lagging?

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Electrical Engineering: We have a six-pole 440-v-rms 60-hz delta connected

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