Why the voltage generated in aircrafts has frequency of 400 Hz ?

Answer 1

AC voltage generated by a 'magneto' depends on the speed of rotation. 3600 rpm gives 60 hz. A higher frequency requires smaller capacitors, etc to rectify the signal (create DC), hence saving weight and cost.

Answer 2

As Growl pronounced, because of the fact the frequency is going up, the size of very almost all the factors (quite turbines and electric powered automobiles) is going down. extra, very almost all the vast purchasers, use 3 area AC, which extra assists in keeping the turbines and automobiles smaller. The above i understand to be real, yet I even have oft questioned why, if 4 hundred is greater efficient, why no longer one thousand or 2000. in accordance to what I even have examine, and that i won't have the capacity to ascertain its accuracy, the U. S. military, at one time, used 800 hz yet this led to multiple noise subject concerns. additionally, there have been eddy contemporary problems with the laminated structures in automobiles and transformers. that's merely my guess. As for now, i could guess that around the time of the DC-4 and/or DC-6, 4 hundred hz develop into settled on because of the fact the de-facto in many situations occurring, and it merely carried forward from there. whether all the subject concerns with 800 hz have been to be fastened, who needs to bypass decrease back to sq. a million for each and each ingredient.

Answer 3

with higher frequences you can use smaller coils and caps for filtering.

Answer 4

NOW IM CONFUSED. I THOUGHT VOLTAGE WAS MEASURED IN VOLTS? I GUESS IM WRONG