Output frequency calculation for three-phase alternator
A three-phase alternator containing eight poles is turning at 900 RPM. What is the output frequency?
Your Answer: 60 Hz
f = Pn/120
f = 8X900= 7200
f= 7200 / 120
f = 60hz.
This was marked incorrect. But it is the correct answer.
I agree with your answer of 60Hz. The same thing happend to me.
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