# AC Fundamentals – 43

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43. To produce an 800 Hz sine wave, a four-pole generator must be operated at ________.

(a) 200 rps
(b) 400 rps
(c) 800 rps
(d) 1,600 rps

Explanation
Explanation :

F = 800 Hz

N = 120F/P = 120 * 800 / 4 = 24,000 rpm = 24,000 / 60 rps = 400 rps

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