A four poles, three-phase, doubly-feed induction motor has ...

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Ano: 2013 Banca: VUNESP Órgão: DCTA Prova: VUNESP - 2013 - CTA - Tecnico em Elétrica |
Q2883750 Engenharia Elétrica

A four poles, three-phase, doubly-feed induction motor has its rotor winding terminals left unconnected. A three-phase symmetrical power source, with 220,0 [V] and 60,0 [Hz], is suddenly connected to the machine stator electrical terminals at standstill, resulting in line currents with 5,0 [A] of magnitude, lagging the stator voltages for almost 90,0 degrees in each phase.

O texto ilustra a ligação à rede trifásica de alimentação de uma máquina

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