railway UPMRC SCTO 2024 Mock Test Electrical Machines Transformer Parallel Operation of Three Phase Transformers
Which of the following combination of 3-phase transformers can be successfully operated in parallel?
1
∆-Y and ∆-Y
2
Y-Y and ∆-Y
3
∆-∆ and ∆-Y
4
Y-∆ and ∆-∆