NEC Electronics · 2081 · Question 30

Ra, Rb, and Rc are resistances connected in star at terminals A, B, and C. After transforming to delta, what is the resistance between A and C?

Star-Delta Transformation

ARa+Rb+Ra*Rb/Rc
BRa+Rc+Ra*Rc/Rb
CRa+Rb+Ra*Rc/Ra
DRa+Rc+Ra*Rb/Rc
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Ra, Rb, and Rc are resistances connected in star at terminals A, B, and C.… | NEC Electronics | License Prep