Discussion
A delta-star connected three-phase transformer introduces a phase shift of
Answer: D
Correct answer: 30 degrees between primary and secondary line voltages
In a delta-star connection the primary line voltage is a phase voltage of the delta while the secondary line voltage is the difference of two star phase voltages, and the two differ in phase by 30 degrees. The shift matters when transformers are paralleled: two units must belong to the same vector group or a large circulating current will flow.
No comment is present. Be the first to comment.
Loading…
Post your comment
Please log in or register to post a comment.
Examination Categories
- SSC Exams
- Banking Exams
- Teaching Exams
- Civil Services Exams
- Railways Exams
- Engineering Recruitment Exams
- Defence Exams
- State Government Exams
- Police Exams
- Insurance Exams
- Nursing Exams
- Other Government Exams
- NRA CET
- PG Entrance Exams
- Campus Placement
- MBA Entrance Exams
- CUET and UG Entrance
- Judiciary Exams
- Regulatory Body Exams
- Software Development