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Question 20244
JEE Physics · Easy

Electromagnetic Induction and Alternating Current: AC Generator Frequency MCQ

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AC Generator FrequencyEasyQuestion 20244

Question

A 2-pole AC generator rotating at 3000 rpm produces AC at frequency:
  1. A
    25 Hz
  2. B
    50 Hz
    Correct
  3. C
    100 Hz
  4. D
    3000 Hz

Correct answer

50 Hz

Explanation

f = Pn/120 where P = number of poles, n = rpm. f = 2×3000/120 = 50 Hz. Indian household AC is 50 Hz.

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