Commercial Pilot License (CPL) Practice Exam

Question: 1 / 550

What is the primary function of the alternator in the aircraft?

To charge the battery

The primary function of the alternator in an aircraft is to charge the battery. The alternator generates electrical power for the aircraft's systems while the engine is running. As it produces electricity, it continuously replenishes the battery's charge, ensuring that there is a sufficient power supply for all electrical systems throughout the flight.

The other options do not accurately represent the main role of the alternator. While the alternator may indirectly contribute to providing emergency power by keeping the battery charged, its primary purpose is not for emergency situations. Stabilizing flight procedures is more about the aircraft's control systems rather than the electrical system. Lastly, while the alternator does supply power to certain electrical components, including the ignition system in some aircraft, this is a secondary function, not its primary role.

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To provide emergency power

To stabilize flight procedures

To power the ignition system

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