DC GENERATOR EMF GENERATION

[Mminatau]

Why is it that when determining the percentage increase in the flux per pole of a generator, the first digit is not considered? e.g A d.c. generator running at 30 rev/s generates an e.m.f. of 200 V. Determine the percentage increase in the flux per pole required to generate 250 V at 20 rev/s. The answer for this question is said to be 87.5% NOT 187.5% ?

 

[Skogsgurra]

Percent increase - not times.

Gunnar Englund

http://www.gke.org

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Half full - Half empty? I don't mind. It's what in it that counts.