Question 42Electricity & Electronics - Assistant Engineer

The correct answer is D) Relatively low starting torque and relatively low running efficiency. The split-phase single-phase motor shown in figure "A" of illustration EL-0207 is a type of single-phase motor with a starting winding that is disconnected once the motor reaches a certain speed. This design results in relatively low starting torque, as the starting winding is not active during normal running operation. Additionally, the split-phase motor design typically has lower overall efficiency compared to other single-phase motor types, making the "relatively low running efficiency" characteristic also correct. The other answer choices are incorrect because they do not accurately describe the operational characteristics of the split-phase single-phase motor shown in the illustration. For example, option A would be incorrect as split-phase motors do not have relatively high starting torque, and option B would be incorrect as they do not have relatively high running efficiency.