Based on Fig. 4,
Show that the equivalent delta-connected load is 7.846 - 2.77j
The Attempt at a Solution
Here's my thought process:
For part (i), attempt to convert Y to Δ,
So using the relevant equation above
ZΔ of transformed ZY is 12 + 9i
However, that's not done because I need to combine the two delta loads.
Hence, I use the product/sum rule to obtain the combined delta:
which obtained 4.1598 + 4.405j which is wrong
I also used https://www.physicsforums.com/threads/delta-and-star-transformation-ac-circuits.791979/ as guidance for this problem but can't quite point out where my mistake is.