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Physics/alternator kinetic energy

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Question
Sir i want to calculate kinetic energy of
A)100w 3000rpm 220v single phase alternator
b)100w 3000rpm 220v three phase
C)100w 3000rpm 440v three phase
D)100w 3000rpm 60v single phase
sir i want to calculate kinetic energy of above all alternators please provide me formula for this....

Answer
Without the designs of the alternators themselves, there's absolutely no way to calculate the kinetic energy of the moving parts.  The question cannot be answered, not the way it's posed.  If you know the moment of inertia of the rotor part, I can tell you the kinetic energy really easily, but the question gives neither its mass nor dimensions (both of which are required to calculate the moment of inertia).

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Dr. Stephen O. Nelson

Expertise

I can answer most basic physics questions, physics questions about science fiction and everyday observations of physics, etc. I'm also usually good for science fair advice (I'm the regional science fair director). I do not answer homework problems. I will occasionally point out where a homework solution went wrong, though. I'm usually good at explaining odd observations that seem counterintuitive, energy science, nuclear physics, nuclear astrophysics, and alternative theories of physics are my specialties.

Experience

I was a physics professor at the University of Texas of the Permian Basin, research in nuclear technology and nuclear astrophysics. My travelling science show saw over 20,000 students of all ages. I taught physics, nuclear chemistry, radiation safety, vacuum technology, and answer tons of questions as I tour schools encouraging students to consider careers in science. I moved on to a non-academic job with more research just recently.

Education/Credentials
Ph. D. from Duke University in physics, research in nuclear astrophysics reactions, gamma-ray astronomy technology, and advanced nuclear reactors.

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