When the speed of generator is 300 R / min, what is the angular velocity W and the period T?

3000 revolutions per minute is 50 revolutions per second, that is 100 π per second, so the angular velocity is ω = 100 π radians / second = 314 radians / second. Period: from 50 revolutions per second, it takes 1 / 50 seconds per revolution, that is, t = 0.02 seconds
Period formula t = 2 π / ω, angular velocity formula is ω = 2 π f = 2 π n

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