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Electric circuits miscellaneous

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Electric circuits miscellaneous
  1. A delta connected network with Y-equivalent is shown below.

    The resistances R1, R2, R3 (in ohms) are respectively
    1. 1.5, 3 and 9
    2. 3, 9 and 1.5
    3. 9, 3 and 1.5
    4. 3, 1.5 and 9
Correct Option: D

R1 =
Rab Rac
 =
150
 = 3
Rab + Rac + Rbc50

R2 =
Rab Rac
 =
5 × 25
 = 1.5
Rab + Rac + Rbc50

R3 =
30 × 15
 = 9
50



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