Question 72Electricity/Electronics - QMED70% to pass
How are the number of cycles per second developed by the alternator aboard your vessel determined?
AI Explanation
The correct answer is A) the speed of the engine driving the alternator.
The number of cycles per second (frequency) developed by the alternator aboard a vessel is directly proportional to the speed of the engine driving the alternator. This is because the alternator's frequency is determined by the synchronous speed of its rotating magnetic field, which is in turn determined by the speed of the engine. The resistance applied to the field rheostat (B) and the adjustments made to the voltage regulator (C) do not directly affect the alternator's frequency. The synchronous speed of induction (D) refers to the speed of the rotating magnetic field in an induction motor, which is not relevant to the alternator's frequency.
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