Question 305Electricity & Electronics - QMED

The correct answer is A) neutral contactor coil (for autotransformer wye connection). This is the correct answer because the '1S' coil in the illustration represents the neutral contactor coil, which is used in an autotransformer wye connection to control the neutral point. This coil is responsible for switching the neutral connection during different operating modes of the autotransformer. The other options are incorrect because they do not accurately describe the function of the '1S' coil in the context of an autotransformer wye connection. Option B is incorrect as it refers to a 0% contactor coil, which is not the same as the neutral contactor coil. Options C and D are also incorrect as they describe different contactor coils not associated with the neutral point in an autotransformer wye connection.