What is the function of a magneto?

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Multiple Choice

What is the function of a magneto?

A magneto is a self-contained ignition source that generates a high-voltage spark for the spark plugs without needing the battery or alternator. As the engine turns, magnets inside the magneto produce a current in the primary circuit, which is then stepped up to a high voltage in the secondary winding to fire the spark plugs at the correct moment in each cylinder’s compression stroke. The timing is set by the magneto’s mechanism (breakers or electronic timing) and distributed to the cylinders as needed. This independence from the aircraft’s electrical system makes ignition reliable even if the battery or alternator isn’t providing power.

A magneto is a self-contained ignition source that generates a high-voltage spark for the spark plugs without needing the battery or alternator. As the engine turns, magnets inside the magneto produce a current in the primary circuit, which is then stepped up to a high voltage in the secondary winding to fire the spark plugs at the correct moment in each cylinder’s compression stroke. The timing is set by the magneto’s mechanism (breakers or electronic timing) and distributed to the cylinders as needed. This independence from the aircraft’s electrical system makes ignition reliable even if the battery or alternator isn’t providing power.

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