Question

Please be clear in concept and handwriting. A 20HP, three-phase, Wye-connected synchronous motor is connected to...

Please be clear in concept and handwriting.

A 20HP, three-phase, Wye-connected synchronous motor is connected to a 277VAC, 60Hz
power supply. At rated conditions, the motor runs at 3600 rpm and presents a 0.85 lagging
power factor to the power supply. The per-phase armature reactance is 350m?. Armature
resistance is negligible, as are all other sources of power loss.
Considering rated conditions,


a. draw a single-phase equivalent circuit showing V?, Ea and IA, with values.
b. draw a phasor diagram showing Bnet, Br, Bs, IA, ? and ?

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