Question 534Electricity & Electronics - Assistant Engineer

The correct answer is B) 59 Hz. To calculate the output frequency of a synchronous alternator, you can use the formula: Frequency (Hz) = (Number of Poles x RPM) / 120. In this case, the alternator has 12 poles and is operating at 590 rpm. Plugging these values into the formula, we get: Frequency = (12 x 590) / 120 = 59 Hz. The other options are incorrect because: A) 58 Hz is too low, C) 60 Hz is too high, D) 61 Hz is too high.