NG signal is derived from which component of the alternator?

NG signal is derived from which component of the alternator?

• A. The rotor
• B. The stator
• C. The exciter
• D. The NG winding

Answer: (D)

NG stands for gas generator speed. The signal is taken from a dedicated winding inside the generator called the NG winding. This winding is designed specifically to sense engine speed and produce a voltage proportional to NG, which is then conditioned and used by the engine/governor/monitoring system. The rotor and stator make the main electrical power, and the exciter supplies the field for the brushless generator, but none of them provide the NG speed signal directly. The NG winding is the purpose-built source for that signal, which is why it’s the correct source.

NG stands for gas generator speed. The signal is taken from a dedicated winding inside the generator called the NG winding. This winding is designed specifically to sense engine speed and produce a voltage proportional to NG, which is then conditioned and used by the engine/governor/monitoring system. The rotor and stator make the main electrical power, and the exciter supplies the field for the brushless generator, but none of them provide the NG speed signal directly. The NG winding is the purpose-built source for that signal, which is why it’s the correct source.