Question 239Electricity & Electronics - 1st Asst/Chief

The correct answer is A) wye-delta starter with a closed transition. A wye-delta starter is a type of reduced voltage starter used to gradually apply full voltage to an induction motor. The "closed transition" refers to the method of switching from the wye configuration to the delta configuration, where the motor windings are briefly connected in both configurations during the transition to avoid an abrupt voltage change. The other options are incorrect because: B) A wye-delta starter with an open transition would have a brief interruption in the motor supply during the transition, which is not the case here. C) A delta-wye starter is the reverse configuration and is not typically used. D) A delta-wye starter with a closed transition is not a common configuration for induction motor starters.