railway RRB JE (CBT I + CBT II) Mock Test 2024 Electrical Machines Transformer Three Phase Transformer Basics
When a 1-phase transformer is connected in parallel, there are four conditions for proper parallel operation, but when two or 3-phase transformer paralleling is done, there are two additional points along with those four conditions applied for 1-phase.
Statement 1 - The phase sequence must be the same.
Statement 2 - The phase shift between primary and secondary voltages must be the same for all transformers connected in parallel.
From the above two Statements (s), which is/are the correct conditions in this regard?
1
Statement 1 is true, Statement 2 ls false
2
Statement 1 is false, Statement 2 Is true
3
Statement 1 is true, Statement 2 is true
4
Statement 1 is false, Statement 2 is false