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The resistor value in a Y network that is equivalent to a Δ containing three resistors of R Ω each is:

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MPPKVVCL Indore JE Electrical 21 August 2018 Official Paper
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  1.  Ω each
  2. 3 R2 Ω each
  3.  Ω each
  4. 3 R Ω each

Answer (Detailed Solution Below)

Option 1 :  Ω each
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Detailed Solution

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 Delta to Star conversion:

The star equivalent of delta connected resistor is:

If all resistances connected in the delta are 'R', then the star equivalent resistance is:

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Q9.Find DELTA equivalent resistance R12, R23, and R31 from the given STAR configuration.
Q10.Determine the value of equivalent resistance across nodes a and b.

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