An assembly is provided for testing a circuit of a rotor of an AC generator. The assembly includes a base, a rack, a coil housing, one or more coils, and a rotor stand. The rack is coupled to the base and the coil housing is coupled to the rack. The one or more coils are disposed within the coil housing and are adapted to receive electrical power and configured, in response to receiving the power, to generate a magnetic field. The rotor stand is coupled to the base and configured to mount the rotor therein to position the rotor proximate the coil housing.
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