In the following star circuit diagram (figure), the equivalent resistance between the points A and H will be
Text Solution
Verified by ExpertsThe correct answer is:
B
Resistance of CD arm = 2r cos 72 o = 0.62r
Resistance of CBFC branch
∴ ∴ 
Equivalent 
Because the star circuit is symmetrical about the line AH
∴ ∴ Equivalent resistance between A and H
⇒ ⇒ 
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