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Find the equivalent resistance at node A in the delta connected circuit shown in the figure below.(a) 1(b) 2(c) 3(d) 4I have been asked this question during an interview.I'm obligated to ask this question of Star-Delta Transformation in chapter Useful Theorems in Circuit Analysis of Network Theory

Answer»

The correct answer is (d) 4

To explain: PERFORMING DELTA to star transformation we obtain the equivalent RESISTANCE at NODE A is R =(11×12)/(11+12+13)=4Ω.



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