For the Y-network shown in the figure, the value of R1 (in Ω) in the equivalent △-network is
Using star-delta conversions, The value of R1 is given by =5+3+5×37.5=10
In the network shown in the figure, all resistors are identical with R = 300 Ω. The resistance Rab (in Ω) of the network is
R=300 Ω
The equivalent resistance in the infinite ladder network shown in the figure, is Re. The value Re/R is