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(Solved): \[ (6 T) \] (b) An 8-kW, 500-V, three-phase, starconnected synchronous motor has negligibl ...
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(b) An 8-kW, 500-V, three-phase, starconnected synchronous motor has negligible armature resistance. The synchron](https://media.cheggcdn.com/study/46f/46f65524-940b-45a4-a009-9a0c78fcff02/image.jpg)
\[ (6 T) \] (b) An 8-kW, 500-V, three-phase, starconnected synchronous motor has negligible armature resistance. The synchronous reactance/phase is \( 12 \Omega \). Calculate the minimum current that the motor will draw, if excitation is varied. Find the corresponding induced e.m.f./ phase. The full-load efficiency of the motor is \( 86 \% \).
Expert Answer
To calculate the minimum current that the motor will draw, we need to first determine the power factor at which the motor is operating. The power fact