Electricity generator theory question

[elitt222333]

What are the factors that influence a generators output (efficiency?). Does the rotational speed of the magnets influence output? If so, by what magnitude can this be increased? ie. If a system is running at x rpm by what relation can the output be increased if the rotational speed is through the use of gears to 5x... 10x... etc. This may be vague but I am just wondering about the concept. Thanks!

 

[berkeman]

What are the factors that influence a generators output (efficiency?). Does the rotational speed of the magnets influence output? If so, by what magnitude can this be increased? ie. If a system is running at x rpm by what relation can the output be increased if the rotational speed is through the use of gears to 5x... 10x... etc. This may be vague but I am just wondering about the concept. Thanks!

There's a brief discussion about efficiency part-way down this wikipedia intro article:

http://en.wikipedia.org/wiki/Electrical_generator

.

 

[elitt222333]

Thanks for the response! The article was helpful but in re-reading my original post I realized I had worded it wrong. My question should have been: In a system with a predetermined output, and all variables remain constant, would simply increasing the rotational speed of the rotor (be it a conductor in a magnetic field or magnets in a conductive field) increase the output? I read in the article about the number of turns in the wiring being directly proportional to the output, but it did not mention the effect of rotational speed as it relates to output.

 

[elitt222333]

*All variables remain constant not taking into account the additional work applied to increase the rotational speed