AC Fundamentals – 42

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42. The conductive loop on the rotor of a simple two-pole, single-phase generator rotates at a rate of 400 rps. The frequency of the induced output voltage is ________.

(a) 40 Hz
(b) 100 Hz
(c) 400 Hz
(d) indeterminable

Answer
Answer : (c)
Explanation
Explanation :

N = 400 rps = 400 * 60 rpm,
p = 2

N = 120F/P
F = PN/120 = 400 * 60 * 2 / 120 = 400 Hz

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