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Recent content by N.Kim

  1. N.Kim

    Number of poles and induced voltage?

    Interesting! then whys is it that electrical engineers define emf as = 4.44*Ø*f*z where frequency is a function of both number of poles and RPM in the formula f=(P*N)/120 where P is number of poles and N is the velocity in Rotations per minute
  2. N.Kim

    Number of poles and induced voltage?

    Hello guys, I get that turning a loop of wire across a pair of magnetic poles induces a magnetic field. But I don't really understand how frequency plays a role in this. I've read a bit and saw that frequency is directly proportional to induced voltage and that it is not simply RPM but also...
  3. N.Kim

    Motor rating and bearing selection.

    I am currently researching on a new power utility device and encountered a few challenges where my knowledge falls short. Let me highlight them as follows: Data: - A set of 30 discs of inner diameter 0.96m thickness 0.03m outer diameter 1.2m thickness 0.1m. -Each disc has an approximate mass of...
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