Question 275Electricity/Electronics - 1st Asst/Chief70% to pass
In the illustrated switchboard, what is the purpose of the device labeled "AM Sel. Sw."? Illustration EL-0003
AI Explanation
The correct answer is D) it allows the individual three phase legs of alternator current to be displayed on the ammeter by selective switching.
The "AM Sel. Sw." or Ammeter Selector Switch allows the operator to select which individual phase of the three-phase alternator current is displayed on the ammeter. This allows the operator to monitor the current in each phase independently, which is important for identifying any imbalances or issues with the alternator system. The other answer choices do not accurately describe the function of this selector switch.
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