R2=RbRcRa+Rb+Rccap R sub 2 equals the fraction with numerator cap R sub b cap R sub c and denominator cap R sub a plus cap R sub b plus cap R sub c end-fraction
RARB+RBRC+RCRARCthe fraction with numerator cap R sub cap A cap R sub cap B plus cap R sub cap B cap R sub cap C plus cap R sub cap C cap R sub cap A and denominator cap R sub cap C end-fraction : If all star resistors are equal ( RYcap R sub cap Y ), the delta resistor is 2. Problems and Solutions Problem Type Challenge Solution via Transformation Bridge Networks star delta transformation problems and solutions pdf