FAA AMT (Aviation Maintenance Technician) Airframe Practice Exam

Question: 1 / 1030

What is the purpose of an ammeter in a battery charging system?

To indicate the temperature of the battery

To indicate the voltage of the battery

To indicate the rate of current used to charge the battery

The purpose of an ammeter in a battery charging system is to indicate the rate of current being used to charge the battery. An ammeter measures the flow of electrical current in amperes, which is crucial information for ensuring that the battery is being charged at the correct rate to prevent overcharging or undercharging.

Option A is incorrect because an ammeter does not indicate the temperature of the battery, it is designed to measure current flow.

Option B is incorrect because an ammeter measures current flow not the voltage of the battery.

Option D is incorrect because an ammeter does not indicate the battery's capacity, it only measures the current flow.

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To indicate the battery's capacity

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