The frequency of the output of a 4 pole generator is 400 Hz. The generator is turning at
- 6000 RPM.
- 12000 RPM.
- 3000 RPM.
Explanation
Speed in RPM equals 120 times the frequency divided by the number of poles: (120 x 400) / 4 = 12000 RPM. With four poles (two pole pairs) the rotor must turn this fast to generate 400 Hz. The 3000 RPM figure would only suit a much higher pole count for the same frequency.
samed1997 asking:
Please Explain
Community Comments (3)
D
Davide Lucci Posts: 1 31.05.2017 / 17:12
1Hz=1 turn/sec
400Hz=24000RPM (400*60)
there is 4 pole, but you have to think to have only pos and neg.
then 24000/2=12000
400Hz=24000RPM (400*60)
there is 4 pole, but you have to think to have only pos and neg.
then 24000/2=12000
S
samed1997 Posts: 4 31.05.2017 / 18:06
Thanks you
M
Matrioska Posts: 1 07.08.2019 / 14:03
Or you can use formula 120*f\number of poles
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