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  1. N

    NCEES 2009 Power question 530

    Hi Everybody, I'm having an issue with this problem and it's driving me kind of nuts. I know I'm so close to the solution it's killing me but I just can't connect the dots. If anybody can help I'd greatly appreciate it! A 1,000-kVA, 12.47-kV-480Y/277-V transformer with 4% impedance feeds a...
  2. N

    NCEES 2009 Power Question 503

    I just can't get this one to work out and I hope somebody here can help. 3-phase 460 V, 25 hp induction motor, 34 A, 0.75 lagging p.f. I understand that the Smotor = 28.3 angle 41.4 degrees KVA. Based on that the following should be true. Pmotor = 21.23 Qmotor = 18.72 because P = S cos...
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