When using an ohmmeter to check the continuity of a generator field coil, what result indicates a healthy series field coil?

A healthy series field coil in a generator is indicated by very low resistance when checked with an ohmmeter. This low resistance suggests that the coil is intact and has a good electrical connection, allowing current to flow freely through the wire windings.

In a typical application, field coils are designed to create a magnetic field when current flows through them. If the resistance is very low, it confirms that there are no breaks or open circuits within the coils, which would prevent proper operation of the generator. Thus, the low resistance reading is essential for ensuring that the generator can effectively produce the required electrical output.

High resistance readings typically suggest issues such as insulation problems or breaks in the winding, while no measurable resistance could indicate a short-circuit condition, where the current bypasses the coil. Therefore, the observation of very low resistance is crucial for confirming that the field coil is functioning as intended.