Recent content by riotgurl7785

Ok, thanks, that helps. To clarify, field current & rotor current are the same, and armature current & stator current are the same?

Here is the problem statement: A 440V, three-phase synchronous motor is driving a 45 HP pump. Assume the motor is 93% efficient. The rotor current is adjusted until the line current is at a minimum, occuring when the rotor current is 8.2A DC. Determine the rotor current necessary to provide...

Can someone explain the solution to this problem? Specifically at the end of the solution when you find the new rotor current. I do not understand how that ratio was found. I would have thought it to be: Inew = Iold(Eold/Enew) Thanks

I took the Power exam in October and failed....My weakest areas are Measurement & Instrumentation, Circuit Analysis: Devices & Power Electronic Circuits, Rotating Machines & Electromagnetic Devices: Electromagnetic Devices, and Transmission & Distribution: Protection. Any one...

I need a good reference book that covers systerm protection, or advice on how to strengthen my knowledge in this area, it was by far my weakest topic on the October exam... Thanks