HNC - Motor Start up Speed

Discussion in 'Homework Help' started by lee1804, Dec 6, 2009.

  1. lee1804

    Thread Starter New Member

    Dec 2, 2009
    2
    0
    Hello all,

    Stuck on the last question for an assingment, which has really stumped me as i have recently been ill so missed a few lessons!

    "A 3 Phase 6 pole 50Hz induction motor has rotor resistance per phase of 0.2 ohms and a reactance 0.9 ohms per phase. At what speed will it produce maximum torque. Also, what resistance must be added at start up and 600 revs/min.

    :/ Any help is much appreciated as i am not even sure how to start to answer this question!!

    Thanks Lee
     
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